REPORT 1972 - IUTAMiutam.org/wp-content/uploads/2016/04/IUTAM_1972.pdf · 24 August 1972 26 Reports...

INTERNATIONAL UNION OF THEORETICAL AND APPLIED MECHANICS

REPORT 1972

IUTAM Building 404

Technical University of Denmark DK-2800, Denmark

REPORT 1972

lnstitut B hjr Mechonik Univeraitot Stvttgart

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ATLAS BOGTRYK & OFFSET


REPORT 1972

JUT AM Building 404

Technical University of Denmark DK-2800, Denmark

Bureau Secretariat Past Officers Adhering Organizations . Affiliated Organizations .

CONTENTS

Members of the General Assembly Members of the Congress Committee Symposia International Congress Other Meetings Treasurer's report Representation in other organizations Donations

Appendices: Summary Record of the General Assembly of IUT AM at Moscow on

Page

2 2 2 3 7 7 8 9

19 20 21 25 25

24 August 1972 26 Reports

Report on the activities of the Congress Committee 40 Report on ICSU General Assembly . 41 Report on CODATA 42 Rapport sur la XVeme Assemblee pleniere de COSPAR 43 Report on International Commission of Acoustics . 45 Report on the 5th session of the "Joint Ad Hoc Group for the Study of External Forces Affecting Ships" 45 Report on International Centre for Heat and Mass Transfer . 46

Statutes Statuts de !'Union Internationale de Mecanique Theorique et Appliquee 48 Resolution de l' Assemblee Generate de Pallanza 53 Regles de Fonctionnement du Comite des Congres de IUTAM . 53 Statutes of the International Union of Theoretical and Applied Mechanics . 54 Resolution of the General Assembly at Pallanza 59 Rules of procedure for the Congress Committee of IUT AM 59

List of Publications 60 List of Addresses . 69

2 REPORT 1972

Bureau

The following members of the Bureau of IUT AM have been elected for the period November 1, 1972 to October 31, 1976:

Officers: Prof. H. Gorder (Germany) President Prof. W. T . Koiter (Netherlands) Prof. D. C. Drucker (USA)

Vice-President Treasurer Secretary Prof. F. I. Niordson (Denmark)

Members: Dr. R. Legendre (France) Prof. M. J. Lighthill (UK) Prof. W. Olszak (Poland) Prof. L. I. Sedov (USSR)

IUT AM Secretariat Building 404

Secretariat

Technical University of Denmark Lundtoftevej 100 DK-2800 Lyngby Denmark Telephone: (01) 88 46 22 Cable: IUTAM COPH

Elected President 1949 J. Peres

(France) 1953 H. L. Dryden

(USA) 1957 F. K. G. Odqvist

(Sweden) 1961 G. Temple

(UK) 1965 M. Roy

(France) 1968 W. T. Koiter

(Netherlands)

Past Officers Vice President Treasurer R. V. Southwell H. L. Dryden (UK) (USA) J. Peres G. Temple (France) (UK) H. L. Dryden G. Temple (USA) (UK) F. K. G. Odqvist W. T . Koiter (Sweden) (Netherlands) G. Temple W. T. Koiter (UK) (Netherlands) M. Roy H. Gortler (France) (Germany)

Secretary J. M. Burger (Netherlands) F. A. v.d.Dungen (Belgium) M.Roy '(France) M.Roy (France) H. Gorder (Germany) F. I. Niordson (Denmark)

INTERNATIONAL UNION OF THEORETICAL AND APPLIED MECHANICS 3

Adhering organizations Argentine (1959) Sociedad Argentina de Mecanica Teorica y Applicada Facultad de Ingenieria, Paseo Colon 850, Buenos Aires Chairman: Prof. Arturo Guzman Representative: Dr. Mario Gradowczyk

Australia (1964) The Australian National Committee for Theoretical and Applied Mechanics of the Australian Academy of Science, P.O. Box 216, Civic Square, ACT Au-stralia 2608 Chairman: Prof. J. R. M. Radok Representative: Prof. J. R. M. Radok

A1titria (1951) Die Osterreichische Akademie der Wissenschaften, Dr. Ignaz Seipel Platz 2, A 1010 Wien President: Prof. Erich Schmid Secretary-General: Prof. Herbert Hunger Representative: Prof. Heinz Parkus

Belgittm (1949) Comite National de Mecanique Theorique et Appliquee de Ia Classe des Sciences de I' Academie Royale de Belgique, Palais des Academies, Bruxelles President: Prof. B. Fraeijs de Veubeke Secretary: Prof. F. Haus Representatives: Prof. F. Buckens, Prof. B. Fraeijs de Veubeke, Prof. P. Janssens

Bulgaria (1969) Bulgarian National Committee for Theoretical and Applied Mechanics of the Bulgarian Academy of Sciences, ul. "7 noemvri" 1, Sofia President: Prof. G. Brankov Secretary: Prof. M. Kozarov Representatives: Prof. G. Brankov, Prof. B. Dolapchiev

Canada (1963) The National Research Council of Canada, Ottawa 7, Ontario Chairman: Dr. James F. Keffer Representatives : Dr. J . H. Blackwell, Dr. P. G. Glockner, Dr. James F. Keffer, Dr. F. P. J. Rimrott

Czechoslovakia (1949) The Czechoslovak Committee of Theoretical and Applied Mechanics of the Czechoslovak Academy of Sciences (year of change of organization: 1957), Puskinovo nam. 9, Praha 6

4 REPORT 1972

President: Prof. Jan ]erie Representatives: Prof. J. Kozesnik, Prof. Jan Jerie

Denmark (1949) . . The Academy of Technical Sciences of Denmark (Akademtet for de Tekmske Videnskaber), Lundtoftevej 266, 2800 Lyngby President: Prof. Niels Meyer, Gmnnevang 55, 2970 Hersholm Secretary: Mr. Bjerre Lavesen Representatives: Prof. Frithiof Niordson, Prof. Frank Engelund Finland (1952) The Finnish National Committee on Mechanics, Helsinki University of Techno-logy, 02150 Otaniemi Chairman: Prof. S. E. Stenij Representative: Prof. Matti A. Ranta France (1949) Comite National Francais .de Mecanique, 55, Boulevard Malesherbes, Paris VIlle Representatives: Prof: Luc Gauthier, Prof. Paul Germain, Ing. Gen. Robert Legendre, Prof. Maurice Roy

Germany, Fed. Rep.- BRD (1950) The National Committee of BRD within the Gesellschaft fiir Angewandte Mathematik und Mechanik, Universitat Hamburg, Institut fiir Schiffbau, 2 Hamburg 33, Lammersieth 90 Chairman: Prof. Dr. K. Wieghardt Representatives: Prof. E. Becker, Prof. H. Gertler, Prof. E. Mettler, Prof. E. Peste! Hungary '(1948) Hungarian National Committee for IUTAM of the Hungarian Academy of Sciences, Budapest President: Prof. Istvan Sllyi Secretary: Prof. Janos Szab6 Representative: Prof. Istvan Salyi

India (1950) The Indian National Committee for Theoretical and Applied Mechanics of the Indian National Science Academy, Bahadur Shah Zafar Marg, New Delhi-1 Chairman: Prof. P. L. Bhatnagar Representative: Prof. P. L. Bhatnagar

Israel (1950) The Israel Academy of Sciences and Humanities, Jerusalem P. 0. Box 4040 President: Prof. Gershom Scholem Representative: Prof. M. Reiner

lNTERNATIONAL UNION OF THEORETICAL AND APPLIED MECHANJCS 5

Italy (1949) Associazione Italiana di Meccanica Teorica ed Applicata, Consiglio Nazionale delle Ricerche, Piazzale delle Scienze, 7, 00100 Roma President: Prof. Giulio Supino Secretary: Prof. Giovanni Bianchi Representatives: Prof. Giulio Supino, Prof. Carlo Ferrari Japan (1951) The National Committee for Theoretical and Applied Mechanics of the Science Council of Japan, 22-34 Roppongi 7-chome, Minato-ku, Tokyo, 106 Japan President: Prof. Itiro Tani Representatives: Prof. Itiro Tani, Prof. Isao Imai, Prof. Masao Yoshiki Netherlands (1952) Section for Mechanics of the Division of Applied Sciences of the Royal Insti-tute of Engineers, Technische Hogeschool Twente, Postbus 217, Enschede President: Prof. Dr. ir. P. ]. Zandbergen Secretary: Prof. ir. C. de Pater Representatives: Prof. ir. C. de Pater, Prof. ir. J. 0. Hinze Norway (1949) The National Committee on Theoretical and Applied Mechanics of the Norwe-gian Academy of Sciences and Letters, University of Oslo, Blindern, Oslo 3 President: Prof. Enok Palm Representative: Prof. Enok Palm Poland (1952) The Polish Academy of Sciences, Palac Kultury i Nauki, Warsaw President: Prof. W. Trzebiatowski Secretary-General: Prof. J. Kaczmarek Representatives: Prof. W. Nowacki, Prof. W . Olszak, Prof. W. Fiszdon Portrtgal (1968) The Portugese National Committee of Theoretical and Applied Mechanics, U niversidade Tecnica de Lisboa, A venida Rovisco Pais Chairman: Prof. E. R. de Arantes e Oliveira Secretary: Prof. A. Tovar de Lemos Representative: Prof. E. R. de Arantes e Oliveira Rrtmania ( 1956) Institut de Mecanique Appliquee de l'Academie de Ia RPR, Bucarest Representative : Prof. Elie Carafoli Spain (1950) The National Institute of Aerospace Technology "Esteban Terradas", Paseo del Pintor Rosales, 34, Apartado 8346, Madrid - 8 President: Prof. Luis de Azcarraga Representatives: Prof. L. de Azcarraga, Prof. D. 0. Osuna

6 REPORT 1972

Sweden (1950) Swedish National Committee for Mechanics, Chalmers University of Techno-logy, S-40220 Gothenburg 5 President: Prof. Jan Hult Secretary: Prof. N. Frossling Representatives: Prof. S. Berndt, Prof. Jan Hult

Switzerland ( 1950) Eidgenossische Technische Hochschulen Zi.irich und Lausanne President: Dr. Jakob Burckhardt Secretary: Dr. Peter Schindler Representatives: Prof. Niklaus Rott, Prof. Hans Ziegler

UK (1948) The Royal Society, 6 Carlton House Terrace, London SW 1 President : Lord Blackett, C. H. Executive Secretary: Sir David Martin Representatives: Prof. G. K. Batchelor, Prof. R. E. D. Bishop, Sir M. J. Light-hill, Prof. L. Maunder, Prof. P. R. Owen

USA (1949) The U. S. National Committee on Theoretical and Applied Mechanics, Division of Physical Sciences, National Research Council, 2101 Constitution Avenue, Washington D. C. 20418 Chairman: Prof. E. H. Lee Vice-Chairman: Prof. G. Carrier Secretary: Dr. F. N. Frenkiel Representatives: Prof. B. Budiansky, Prof. S. H. Crandall, Prof. C. Drucker, Dr. F. N. Frenkiel, Prof. E. H. Lee

USSR (1956) USSR National Committee on Theoretical and Applied Mechanics, Leningrad-skii prospekt 7, Moscow A-40 President: Prof. N. I. Muskhelishvili Vice-President: Prof. L. I. Sedov Secretary: Prof. G. K. Mikhailov Representatives: Prof. N. I. Muskhelishvili, Prof. L. I. Sedov, Prof. A. A. Ilyushin, Prof. A. A. Nikolskii, Prof. V. V. Sokolovskii

Yugoslavia (1952) National Committee of the Yugoslav Society of Theoretical and Applied Mechanics, Postanski fah 218, Kneza Milosa 9/ 1, Beograd President: Prof. N. Hajdin Secretary: Prof. M. Mursic Representative: Prof. Anton Kuhelj


Affiliated organizations CISM (1970) International Centre for Mechanical Sciences, Palazzo del Torso, Piazza Gari-baldi, Udine, Italy President: Avv. Vinicio Turello Secretary-General: Prof. Luigi Sobrero Rector: Prof. W. Olszak Representative: Prof. Luigi Sobrero Representative of IUT AM in CISM: Prof. H. Gortler

ICHMT (1972) International Centre for Heat and Mass Transfer, Beograd P. 0 . Box 522, Yoguslavia President: Prof. E. A. Brun Secretary-General: Prof. Z. Zaric Representative: Prof. E. A. Brun Representative of IUTAM in ICHMT: Prof. W. T. Koiter

Members of the General Assembly * Prof. J. Ackeret (Switzerland)

Prof. E. R. de Arantes e Oliveira (Portugal)

Prof. L. de Azcarraga (Spain) Prof. G. K. Batchelor (UK) Prof. E. Becker (Germany) Prof. S. Berndt (Sweden) Prof. P. L. Bhatnagar (India) Prof. R. E. D. Bishop (UK) Prof. J. H. Blackwell (Canada) Prof. G. Brankow (Bulgaria)

§§ Prof. E. A. Brun (France) Prof. F. Buckens (Belgium) Prof. B. Budiansky (USA)

* Prof. J. M. Burgers (USA) Prof. E. Carafolie (Rumain) Prof. S. H. Crandall (USA) Prof. B. Dolapchiev (Bulgaria) Prof. D. C. Drucker (USA) Prof. F. Engelund (Denmark) Prof. C. Ferrari (Italy)

• Representing the Congress Committee.

Prof. W. Fiszdon (Poland) Prof. B. Fraeijs de Veubeke

(Belgium) Prof. F. N. Frenkiel (USA) Prof. L. Gauthier (France) Dr. P. Germain (France) Prof. P. G. Glockner (Canada)

* Prof. S. Goldstein (USA) Dr. M. Gradowczyk (Argentina) Prof. H. Gortler (Germany) Prof. J. 0. Hinze (Netherlands)

* Prof. N.J. Hoff (USA) Prof. J . Hult (Sweden) Prof. A. A. Ilyushin (USSR) Prof. I . Imai (Japan) Prof. P. Janssens (Belgium) Dr. J. Jerie (CSSR) Dr. J. F. Keffer (Canada)

0 Prof. W. T. Koiter (Netherlands) Mr. J. Kozesnik (CSSR)

* Prof. Y. H. Ku (USA)

• Members elected by the General Assembly for the period 1972-1976. §§ Representing ICHMT.

8 REPORT 1972

Prof. A. Kuhelj (Yugoslavia) Prof. E. H. Lee (USA) Dr. R. Legendre (France) Prof. M. J. Lighthill (UK) Prof. L. Maunder (UK) Prof. E. Mettler (Germany) Prof. N. I. Muskhelishvili (USSR) Prof. A. A. Nikolskii (USSR) Prof. F. I. Niordson (Denmark) Prof. W. Nowacki (Poland)

* Prof. F. K. G. Odqvist (Sweden) Prof. W. Olszak (Italy) Prof. D. 0 . Osuna (Spain) Prof. P. R. Owen (UK) Prof. E. Palm (Norway) Prof. H. Parkus (Austria) Prof. C. de Pater (Netherlands) Prof. E. Peste! (Germany)

Prof. J. R. M. Radok (Australia) Prof. Matti A. Ranta (Finland) Prof. M. Reiner (Israel) Dr. F. P. J. Rimrott (Canada) Prof. N. Rott (Switzerland) Prof. M. Roy (France) Prof. W. Rubinowicz '(Poland) Prof. I. Salyi (Hungaria) Prof. L. I. Sedov (USSR)

§ Prof. L. Sobrero (Italy) Prof. V. V. Sokolovskii (USSR) Prof. Giulio Supino (Italy) Prof. I. Tani (Japan)

* Sir G. Taylor (UK) * Prof. G. Temple (UK) * Prof. W. Weibull (Sweden)

Prof. M. Yoshiki (Japan) Prof. H. Ziegler (Switzerland)

Members of the Congress Committee Prof. J. Ackeret (Switzerland) Prof. G. K. Batchelor (UK)

** Prof. E. Becker, Secretary (Germany) ** Prof. B. A. Boley (USA)

Prof. J. M. Burgers (USA) Prof. A. Caquot (France)

** Prof. W. Fiszdon (Poland) Prof. S. Goldstein (USA)

** Prof. H. Gortler (Germany) Prof. N.J. Hoff (USA) Prof. W. T. Koiter (Netherlands)

§ Representing CISM. •• Members of Executive Committee.

** Prof. N. I. Muskhelishvili (USSR) Prof. F. K. G. Odqvist (Sweden) Prof. H. Parkus (Austria) Prof. M. Roy (France) Prof. W. Rubinowicz (Poland) Prof. L. I. Sedov (USSR) Prof. H. Solberg (Norway) Prof. I. Tani (Japan) Sir Geoffrey Taylor (UK) Prof. G. Temple (UK) Prof. W. Weibull (Sweden)


Reports of Symposia held In 1972 1.

9

JOINT IUTAM/ ITTC SYMPOSIUM ON THE DIRECTIONAL STABI-LITY AND CONTROL OF BODIES MOVING IN WATER, London (UK), April 17 to April 21, 1972.

Chairman: Prof. R. E. D. Bishop, University College London, UK. 80 participants from 12 countries (Australia, Bulgaria, Canada, Denmark,

France, Germany, Japan, Netherlands, Norway, Sweden, UK, USA).

Report: This symposium was jointly sponsored by IUTAM and the International

Towing Tank Conference (ITTC). The participants were drawn mainly from engineering and naval architecture and the meetings were enlivened by the excellent mixture of experience at sea and scientific expertise that was re-presented. The symposium unquestionably attracted most of the best-known workers in this field. There were 80 delegates present drawn from 12 countries; there were 34 U.K., 14 U.S., 6 Dutch, 5 French, 5 Japanese, 4 Danish, 4 German, 3 Swedish and 2 Australian participants, and 1 participant each from Bulgaria, Canada and Norway. Four Russian participants were expected but, although they contributed 3 papers, they were prevented from attending by difficulties over visas. The Symposium was honoured by the presence of the President of IUT AM, Prof. W. T. Koiter.

The generosity of a number of benefactors materially simplified planning and the Scientific and Local Organising Committees wish to record their thanks for this help:

The Superintendent of the Admiralty Experiment Works, Haslar, permitted a one-day visit to be made to his establishment and arranged for many model demonstrations of problems of interest to the delegates.

Shell gave a film show and reception for the delegates in Shell Centre and also made a gift of £ 200 towards the running costs of the Symposium.

The Institution of Mechanical Engineers, London, made considerable finan-cial concessions in producing excellent bound preprints very rapidly.

The Chairman and Committee of Lloyd's permitted the Symposium to use the magnificent facilities of the Captains' Room for a Dinner in Lloyd's.

These friendly gestures were deeply appreciated by the participants. The Symposium centred around 29 research papers, all of which provoked

discussion. They were presented in seven sessions:

Session Title

1. Problems and requirements of directional stability, control and manoeuvr-ability.

2. Possible theoretical approaches.

10 REPORT 1972

3. Model testing. 4. Prediction and simulation of manoeuvres. 5. Improvement of stability and control by various means. . 6. Stability and control problems associated with acceleration and deceleration. 7. Stability and control in waves.

Session 3 was held at the Admiralty Experiment Works and the remainder were held in the Department of Mechanical Engineering, University College London.

The proceedings of the Symposium will appear as a book, later in 1972, published by the Institution of Mechanical Engineers. There is no doubt that they will represent an authoritative and up to date account of the state of a subject whose importance is already very great and is still rapidly growing.

R. E. D. Bishop

Scientific Programme

Trtesday a.m. Problems and Requirements of Directional Stability, Control a11d Manoettvrability

(Chairman: R. E. D. Bishop, UK) K. Nomoto (Japan): "Problems and requirements of directional stability and

control of surface ships". M. C. Eames (Canada): " High speed craft". M. Gertler (USA): "Some recent advances in dynamic stability and control of

submerged vehicles". M. A. Abkowitz (France): "Towed bodies". M. Fujino (Japan): "Directional stability and control of a vessel in restricted

waters".

Tuesday p.m. Possible Theoretical Approaches

(Chairman : J. Gerritsma, Nethedands) T. Y. Wu & J. N. Newman (USA): "Unsteady flow around a slender fish-like

bod ". D. Clare (UK): "A two-dimensional strip method for surface ship hull deri-

vatives: Comparison of theory with experiments on a segmented tanker model".

Wednesday Model Testing

(Chairman: A.J. Vosper, UK) R. K. Burcher (UK): "Model testing". H. Fujii (Japan): "On manoeuvre tests to investigate the course-keeping

qualities of ships".


G. D. Thurman (UK): "Yaw motion stability, twin screw twin rudder ships, some model and ship results".

M. S. Chislett & L. Wagner Smitt (Denmark): "A brief description of the HyA large amplitude PMM system".

P. W. Hunt (UK): "Manoeuvring research at admiralty experiment works using free-sailing models".

Thursday a.m. Prediction and Simulation of Manoertvres (Chairman: C. W. Prohaska, Denmark) N. H. Norrbin (USA): "Ship manoeuvring with application to shipborne pre-

dictors and real-time simulators". G. van Leeuwen (Netherlands): "Some aspects of prediction and simulation of

manoeuvres". G. R. G. Lewison (UK) : "Measurement of steering derivatives on full-scale

ship trials".

Thttrsday p.m. Improvement of Stability and Control (Chairman: R. Brard, France) M. I. Bech (Denmark): "Some aspects of the stability of automatic course

control of ships". T. Kyoma (Japan): "Improvement of course stability and control by a subsidiary

automatic control". J. E. Kerwin, P. Mandel & S. Dean Lewis (USA): "Hydrodynamic characteristics

of flapped rudders". H. Ritter (UK): "Improvement of control by special devices" . C. C. Glansdorp & J. G. L. Pijfers (Netherlands): "Effect of design modi-

fications on the natural course stability of full tanker models".

Friday a.m. Stability and Control Problems Associated with A c_celeration and Deceleration

(Chairman: A. G. Parkinson, UK) M. Jourdain (France) : "Stability and control problems associated with accelera-

tion and deceleration". L. Wagner Smitt & M.S. Chislett (Denmark): "Course stability while stopping" .

Friday p.m. Stability and Control in W aves

(Chairman: R. E. D. Bishop) J. E. Conolly (UK): "Stability and control in waves : A survey of the problem" . W. G. Price (UK) : "The stability of a ship in a simple sinusoidal wave" . H . Eda (USA): "Yaw control in waves" .

12 REPORT 1972

2. IUTAM SYMPOSIUM ON STABILITY OF STOCHASTIC DYNA-

MICAL SYSTEMS, University of Warwick, Coventry (UK), July 11 to July 14, 1972.

Chairman: Prof. J. A. Shercliff, University of Warwick, UK. 40 participants from 12 countries (Australia, Belgium, BRD, Canada,

Czechoslovakia, DDR, France, Japan, Rumania, Sweden, UK, USA). Report:

The Symposium was considered to be a success. The subject matter was sufficiently narrow to make all the proceedings of interest to most participants, and sufficiently unexplored and novel to generate many useful scientific ex-changes. A surprising number of participants had not met each other before. The absence of the USSR contributors was particularly to be regretted.

The Symposium revealed to what an extent the subject was still unexplored, with many unsolved problems and failures of communication between theore-ticians and practitioners. It is a subject area where misunderstanding of subtle but basic principles by the practitioners can lead to erroneous results and where assumptions made by the theoreticians can tend to be academically remote from practical problems. The Symposium contributed a great deal to bridging some of these gaps in understanding. Significantly, the discussions following the more "applied" papers were the most rewarding. Some of the papers, including some of the better ones, proved to be off the main theme. With a subject still so much in its infancy, it was not surprising that some of the work was also found to be defective. The number of thoroughly skilled experts in the field is remark-ably small at this stage.

Though some aspects (e.g. linear systems with white noise coefficients) were covered in some depth, the meeting revealed what a lot still needs to be done, for example, on:- stability of linear systems with wide band noise, estimations of probability that linearisation remains valid, relations between invariance theorems and results on invariant measures, etc. There is a great need for more detailed examples to be worked out, and for simulation studies to compare with the various theoretical results.

We are confident that the exchanges at the Symposium and the circulation of the Proceedings in due course will provide useful stimulus to this important area of study. J. A. Shercliff

Scientific Programme Monday Mathematical Foundations

K. Ito (Japan and USA): "Stochastic differentials of continuous local quasi-martingales".

P. Mandl (Czechoslovakia): "An application of Ito's formula to stochastic control systems".


A. Friedman (USA): "Stability and angular behaviour of solutions of stochastic differential systems".

T. Morozan (Rumania): "Boundedness properties for stochastic systems".

T11esday Identification and Filtering

K. J. Astrom (Sweden): "System identification". D. W. Mayne (UK): "Parameterization and identification of linear multi-

variable systems". A. Bensoussan (France): "Optimisation of senor location m a distributed

parameter system" . T. E. Duncan (USA): "Some Banach-valued processes, with applications" .

W ednesday Stochastic Stability

H. J. Kushner (USA): "Stochastic stability" . U. G. Haussmann (Canada): "Stability of linear systems with control-dependent

noise". J. L. Willems (Belgium): "Liapunov functions and frequency domain stability

criteria for a class of stochastic feedback systems". D. J. G. James (UK): "Stability of model reference systems with random

inputs". W. Wedig (BRD): "Regions of instability for a linear system with random

parametric excitation". T. Nakamizo & Y. Sawaragi (Japan): "Analytical study on n-th order linear

systems with stochastic coefficients".

T httrsday Stocha.rtic Stability (continued) F. Kozin (USA): "Stability and the linear stochastic system". C. J. Harris (UK): "The Fokker-Planck-Kolmogorov equation in the analysis

of nonlinear feedback stochastic systems". J. A. Lepore (USA): "Stability of linear cylindrical shells subjected to stochastic

excitations". R. Brockett & J. C. Willems (USA): ''Average value criteria for stochastic

stability". P.R. Sethna (USA): "The ultimate behaviour of a class of stochastic differential

systems dependent on a parameter". H. Bunke (DDR): "Stable periodic solutions of weak nonlinear stochastic

differential equations".

Friday Applications

S. R. Ariaratnam (Canada) : "Stability of mechanical systems under stochastic parametric excitation".

14 REPORT 1972

L. A. Mysak (UK): "Waves in a rotating stratified fluid with laterally de-pendent random inhomogeneities".

P. Sagirow (BRD): "The stability of a satellite with parametric excitation by the fluctuations of the magnetic field of the earth".

*V. G. Kolomiets (USSR): "The application of averaging principles in non-linear oscillatory stochastic systems".

*V. V. Solodovnikov (USSR): "Optimization of multidimensional stochastic systems and stability of solutions" .

3. JOINT IUTAM/ IAHR SYMPOSIUM ON FLOW-INDUCED STRUC-

TURAL VIBRATIONS, Karlsruhe (BRD), August 14 to August 18, 1972. Chairman: Prof. E. Naudascher, University of Karlsruhe, BRO. 210 participants from 27 countries (Australia, Austria, Belgium, Bulgaria,

Canada, CSSR, Denmark, France, Germany, Hungary, India, Israel, Italy, Japan, Jugoslavia, Mexico, Netherlands, Nigeria, Norway, Portugal, Rhodesia, Rou-mania, South Africa, Sweden, Switzerland, UK, USA). Report:

The selection of 50 papers and short contributions out of some 100 manu-scripts submitted was the main task of the Scientific Committee consisting of the following members:

Prof. G. Coupry, France Prof. A. G. Davenport, Canada Prof. E. Naudascher, Germany (Chairman) Prof. L. I. Sedov, USSR Prof. G. H. Toebes, USA

Special priority was given to research papers which fostered the under-standing of mechanisms of flow-induced vibrations. The Symposium was aimed at drawing together scientists and engineers, who approach flow-induced vibra-tions with different objectives and techniques in different areas of applications. Accordingly, invitations were extended to persons engaged in research as well as in design and having to deal with vibrating structures in a great variety of fields.

The local arrangements of the Symposium were in the hands of a Local Organizing Committee (Chairman: E. Naudascher, Secretary: A. Richter) . Financial support, apart from the allocations of IUTAM and IAHR, was provided by: the German Science Foundation (DFG); the Ministry of Cultural Affairs in Baden-Wiirttemberg; the Karlsruhe Alumni Association; the City of Karlsruhe; the Klein, Schanzlin & Becker Foundation; the Landesgewerbeamt Karlsruhe; and the Community Leader, US Army, Karlsruhe.

• Unable to attend in person.


Preprints had been prepared and sent to all participants well in advance of the meeting. As a consequence, many prepared discussions were presented which helped to make the Technical Sessions a stimulating experience. (All con-tributions to the technical discussions will appear in a separate volume.) Additional opportunity for exchange of information was provided through a carefully planned supporting program including an Open House and Tours of the local Hydraulics and Fluid-Mechanics Laboratories. For many participants, one of the highpoints of the Symposium consisted in the Group Discussions "Research Priorities in Flow-Induced Vibrations" which were subdivided into the five workshops: New Theoretical and Experimental Approaches; Air and Water Craft; Buildings, Towers, and Bridges; Hydraulic Structures and Machinery; and Marine Structures. According to the reports from these work-shops during a Panel Discussion on the following morning, not only was there a concern expressed for special topics and problems that should get more attention in the future : the need was emphasized for more communication between experimental and theoretical research and design, for a more structured body of unifying understanding of the proliferating hetero-geneous information, for more cross-discipline cooperation and increased feedback from field ex-periences. It was felt that professional organizations including IUT AM should stimulate more workshops which differ from the usual gathering of narrow specialists by an emphasis on dialogue between the application- and research-minded engineer, and that they establish well-advertized awards and prizes for basic review articles and books, not so much written for the benefit of the fellow researcher as for the practicing and design engineer.

Most gratifying for the organizing staff was the predominant opinion that Symposia under joint sponsorships like the one reported here should be en-couraged more often. The Proceedings will be published by the Springer-Verlag, Berlin (editor: E. Naudascher). E. Naudascher

Scientific Programme Monday, August 14

Opening addresses by Prof. H . Draheim, Rektor of the University of Karlsruhe, Prof. T. Hayashi, President of the IAHR, and Prof. H. Gortler, Treasurer of the IUTAM.

Session A Generation of Oscillatory Flows

(Chairman: H. Schlichting)

R. Wille (Germany): "Generation of oscillatory flows" (General Lecture). P. A. Kolkman (Netherlands): "The instability of a vertical water curtain" . B. Treiber (Germany): "Theoretical study of nappe oscillation". M. V. Morkovin (USA): "On the response of separated pockets to modulations

of the free stream" .

16 REPORT 1972

M. Favre-Marenet & G. Binder (France): "Flapping jets'' . R. Curtet & B. Martins (France): "Oscillation of a jet in a rotating fluid". F. R. Fricke, M. W. Parkin & P. 0. A. L. Davies (UK): "Periodicity in annular

diffusor flow". A.Daubert, L. Pugnet & F. Boulot (France): "Hydraulic instability in the vessel

of a pressurized water reactor" .

Session B Mathematical Models of Flow-Induced Vibrations

(Chairman: A. G. Davenport)

G. V. Parkinson (Canada): "Mathematical models of flow-induced vibrations of bluff bodies" (General Lecture) .

I. G. Currie, R. T. Hartlen & W. W. Martin (Canada): "The response of circular cylinders to vortex shedding".

Y. N. Chen (Switzerland): "Wake swing and vortex shedding in a cross flow past a single circular cylinder".

D. W. Sallet (USA): "On the prediction of flutter forces". J. H. Gerrard (UK): "The low frequency components of separated flows". ]. C. R. Hunt (UK): "A theory for fluctuating pressures on bluff bodies in

turbulent flows". *V. M. Ljatkher (USSR): "Hydrodynamic effect of turbulent flow upon flow

boundaries".

Tuesday, Augwt 15

Session C Vibrations of H yd1·aulic Stmclures (Chairman: H. W. Partenscky)

]. H. Douma (USA): "Field experiences with hydraulic structures" (General Lecture).

*M. F. Skladnev & I. S. Sheinin (USSR): "On studies into fluid-induced oscilla-tions of structural members".

*A. S. Abelev & L. L. Dolnikov (USSR): "Experimental studies on self-oscillation of low level hydraulic vertical-lift gates".

*P. E. Lisenko & G. A. Chapajkin (USSR): "On self-excited oscillations of seals concerning gates of hydrotechnical structures".

*L. A. Goncharov & V. I. Semenkov (USSR): "Field investigations into vibra-tions of hydraulic structures and machinery".

R. Brepson & P. Leon (France): "Vibrations induced by von Karman vortex trail in guide vane bends".

D. S. Weaver, W. Mansour & N. Kouwen (Canada): "On the hydro-elastic vibration of a hydraulic check valve".

• Unable to attend the Symposium.


Session D* Flow-Induced Vibrations of Beams and Bridge-Decks

(Chairman: W. D. Baines)

R. H . Scanlan (USA) & K. S. Budlong (Canada): "Flutter and aerodynamic response considerations for bluff objects in a smooth flow".

V. J. Modi & ] . E. Slater (Canada): "Quasi-steady analysis of torsional aero-elastic oscillations".

A. G. Davenport, N. Isyumov & T. Miyata (Canada): "The experimental deter-mination of the response of suspension bridges to turbulent wind".

F. H. Durgin & P. Tong (USA) : "The effect of twist motion on the dynamic multimode response of a building".

N. Shiraishi '(Japan): "On aerodynamic response of truss-stiffened bridge sections in fluctuating wind flows".

R. A. Sawyer (UK): "Torsional stability of H-sections in random vertical gusts".

SeSJion E Flow-Indttced Vihations of Bl11ff Bodies

(Chairman: A. Roshko)

R. Oat (France): "Unsteady aerodynamics of wings and blades" (General Lecture).

C. F. M. Twigge-Molecey & W. D. Baines (Canada): "Measurements of un-steady pressure distribution due to vortex-induced vibration of a cylinder of triangular section".

P. Bublitz (Germany): "Measurements of the unsteady pressures and forces acting upon an oscillating circular cylinder in transverse flow".

0. M. Griffin '(USA): "Synchronized cylinder motion effects on vortex forma-tion, velocity fluctuations, and mean flow".

R. H. Wilkinson, J. R. Chaplin & T. L. Shaw (UK): "On the correlation of dynamic pressures on the surface of a prismatic bluff body".

R. King & M. J. Prosser (UK): "Criteria for flow-induced oscillations of a cantilevered cylinder in water".

F. Angrilli, G. Di Silvio & A. Zanardo (Italy): "Hydroelasticity experiments on circular cylinders in a water stream".

M. M. Zdravkovich (UK): "Fluid-excited vibrations of two cylinders in tandem, and their suppression".

Wednesday, August 16

Panel Dismssion

(Chairman: E. Naudascher)

Research Pri01·ities in Flow-Ind11ced Vibration.r

G. H. Toebes (USA): "New theoretical and experimental approaches". G. Coupry (France) & H. N. Abramson (USA): "Air and water craft".

• Simultaneous with Session C.

18 REPORT 1972

A. G. Davenport (Canada): "Buildings, towers, and bridges". M. V. Morkovin (USA): "Hydraulic structures and machinery". E. Plate (Germany): "Marine structures" .

Session F Flow-Induced Vibrations of Marine Structures

(Chairman: M . Hino)

R. L. Wiegel (USA): "Ocean wave spectra, eddies, and structural response" (General Lecture).

L. R. Wootton, M. H. Warner & D. H. Cooper (UK): "Some aspects of the wake behind full-scale oscillating piles".

J. H. Nath (USA): "Vibrations in mooring lines from ocean waves" . R. F. Dominguez & C. E. Smith (USA): "Oscillations of buoy-cable mooring

systems". V. A. Dzhupanov (Bulgaria): "An external hydroelastic problem of two circular

cylindric supports". H. N. Abramson (USA): "Hydrofoil flutter".

Session G** Flow-Induced Vibration.r of Shells and Pipes

(Chairman: A. Daubert)

S. Chen (USA) : "Vibrations of continuous pipes conveying fluid". G. H. Toebes :(USA): "Flow field features of cylinders in confined flow". M. P. Paidoussis (Canada): "Stability of cylindrical shells conveying fluid" . D. S. Weaver & T. E. Unny (Canada): "The hydroelastic stability of a cylin-

drical shell". F. Hara, T. Shigeta & H. Shibata (Japan): "Two-phase flow induced random

vibration".

Session H Flow-Induced Vibrations Relati11g to Buildings

(Chairman: C. Scruton)

P. W. Bearman (UK): "Turbulence-induced vibrations of bluff bodies". D. J. Maull & R. A. Young (UK): "Vortex shedding from a bluff body in a

shear flow". C. B. Sharma & D. J. Johns (UK): "An experimental study of the mechanism of

wind-excited ovalling vibrations of thin circular cylindrical shells". A. Naumann & H. Quadflieg (Germany): "Wind-induced vibrations of

buildings''. J. W. G. van Nunen (Netherlands): "Steady and unsteady pressure and force

measurements on a circular cylinder at Reynolds numbers up to 7. 7 X 106".

•• Simultaneous with Session F.


H. Loiseau & E. Szechenyi (France): "The dynamic lift acting on clamped and oscillating circular cylinders subjected to an incompressible fluid flow at trans-critical Reynolds numbers".

K. R. Cooper (Canada) : "Wake galloping, an aeroelastic instability". M. Novak (USA): "Galloping oscillations in smooth and turbulent flows".

International Congress 13th INTERNATIONAL CONGRESS OF THEORETICAL AND

APPLIED MECHANICS, Moscow (USSR), August 21 to August 26, 1972. President: Prof. N. I. Muskhelishvili, USSR Academy of Sciences, USSR. 2252 participants from 38 countries (Argentine, Australia, Austria, Bel-

gium, BRD, Bulgaria, Canada, Ceylon, Cuba, Czechoslovakia, Denmark, DDR, D. R. Vietnam, Finland, France, Ghana, Greece, Hungary, India, Iran, Ireland, Italy, Japan, Netherlands, New Zealand, Norway, Poland, Portugal, Roumania, Sweden, Switzerland, Turkey, UK, USA, USSR, Venezuela, Yugoslavia, Tunesia).

Scientific Progt·amme General Lectures V. V. Novozhilov (USSR): "On the prospects of the phenomenological ap-

proach to the problem of fracture". M. J. Lighthill (UK): "Aquatic animal locomotion". K. Wieghardt (BRD): "Ship hydrodynamics". A. E. Bryson, Jr. (USA): "Control theory for random systems". B. M. Fraeijs de Veubeke (Belgium): "The numerical analysis of structures".

Sectional Lectures G. F. Carrier (USA): "The dynamics of atmospheric vortices". S. S. Grigoryan (USSR): "Some problems of mechanics in oil industry". M. Landahl (Sweden): "Drag reduction by polymer addition". H. L. Goldsmith (Canada): "The mikrorheology of human erythrocyte suspen-

sions". J. R. Melcher (USA) : "Electrohydrodynamics". J.-P. Guirand (France): "Gas dynamics from the point of view of kinetic

theory". L. I. Sedov (USSR): "Nonsteady flow of water at high speeds". M. S. Longuet-Higgins (UK): "Breaking waves". A. Yu. Ishlinskii :(USSR): "Dynamics of connected rigid-body systems". F I. Niordson & P. Pedersen (Denmark): "Optimization processes for mecha-

nical systems: a review of optimal structural design". J. R. Philip (Australia): "Flow in porous media". J. C. Rotta (BRD): "Turbulent shear layer prediction on the basis of the trans-

port equations for the Reynold's stresses".

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Summarised Statement of Receipts and Payments for the year ended 31 st December 1972

(A) UNRESTRICTED FUNDS Balances 1st January 1972 .. . ................................. ............ . .. ........ ...... . Receipts: Subscriptions (Schedule I) ............... .. . ..... .. . .. .. ..... ... ...... .... ... ........... . Bank Interests ............ . ... ... . ......... ... ...... .. .... ............... ... . ... ............ . . Reimbursement ICSU dues for 1971 ......... . . .. . .. ............ .. ............ . ...... ... . Partial return of allocation for London Symposium ........................ ...... .. . Transfer Mees en Hope to Deutsche Bank ........ ...... .... .. ...... .. .. ....... ...... .. Proc. 7th and 8th Intern. Congress .... ............ .............. .... .............. .... .. Partial reimbursement of allocation for Congress Moscow 1972 ................. . Totals ................. . ................................. . .................................. .. Payments: Subscription 1971 to ICSU .............................................................. . Auditor's fee financial report 1971 ...... .... ........ .. .. .. . ............................ . 8 Proceedings for members IUTAM Bureau Prof. Budiansky, Trav.exp. Copenhagen ...... .... ........ .. .... .......... .... ...... . .. .. Prof. Koiter, Trav.exp. Cambridge and Moscow ................... ........ .......... .. Prof. Niordson, Trav.exp. Paris ..................................... .. ................. . Prof. Lighthill, Trav.exp. Paris .. .............. .... .... ... .. ........ ..................... .. Bank charges . ............................. . ............... . ..... ....... ............. ...... .. . Transfer Mees en Hope to Deutsche Bank ....... ... .. .. ...... ........ .... ............ . Travelling and subsistance expenses General Assembly (Schedule II) .......... . . Transfer to Restricted Funds ..... ..... ............ ........ .... ... ..... ..... ............... . Total payments .... ...... ....... ....... . ............. . .............. ..... ... ............. ... . Balances 31st December 1972 .......... .. ......... . ............... . .. .. ............ . . .... . .

U. S. Dollars

2.593,37

2.593,3 7

2.033,95 2.033,95

559,42

Dutch G11ilders

205.376,75

8.954,21 6.410,46

220.741,42

1.683,02 748,45 297,35

5,-50.5 60, 30*)

53.294,12 167.447,30

Deutsche Mark

40.388,20

24.383,60

471,96 6.502,30

50.000,-*) 155,92

4.006,84 125.908,28

1.021,72 527,50 582,06

2.152,93

55,96

6.429,38 56.261,88 67.031,43 58.876,85

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(B) RESTRICTED FUNDS

Balances lsi January 1972 . . ..... ..... ... .... . ... . . .. ...... .. . ...... ....... .. . .. .... ....... .

Receipts: Grants from ICSU ................... ... ..... . ...... ..... ...... . . .. . . ........... ... ..... .. .. . Transfer from Unrestricted Funds . .. .......... .... .......... ..... . ...................... .

Totals

Payments: Symposium London (Schedule III) ........ .. ............ . .... .. . .... ........... . . ...... .. Symposium Coventry (Schedule IV) ................ .. ..... ... .... .. . .. . ....... .. ...... .. Symposium Karlsruhe (Schedule V) ........... .. . ........ . ......... . . .... . .... . ...... .. Allocation for Congress Moscow ............. . .............. ......... ... .. . . . ....... .. .... .

Total payments .................. ..

Balances 31st December 1972 ....

SUMMARY OF BALANCES (A) Unrestricted Funds .... . .............. .. ......... ..... ...... ........ ........ . . ..... ... . (B) Restricted Funds .... ....... .. ........... .... .................. ... ..... .. .... . ... .. .... .

Balances of Banks, 31st December 1972 ...................... .... ........ ............. .

U. S. Dollars

-;- 2.033,95

+ 2.033,95

559,42

559,42

D11tch G11ilden

22.627,95

28.800,-

51.427,95

9.639,15 12.771,42

22.410,57

29.017,38

167.447,30 29.017,38

196.464,68

INTERNATIONAL UNION OF THEORETICAL AND APPLIED MECHANICS Congress Committee of the IUTAM

(formerly International Committee for the Congresses of Applied Mechanics)

(C) Balances, 1st January 1972 ....... .. ... ... ........... .. . ....................... . .. ..

Receipts: Bank Interests ............................ .. ...... .. .... . ..... . ..................... .. . ....... . Receipt of fees, Congress Mosmw 1972 ......................... .. .................... .

Totals ..... ........... ........... ... ... ....... .. ............. ..... . .. ........................ ..

Paymenl!: Prof. Batchelor, Travel costs Darmstadt ........... . ................. .. .. ............. .. Prof. Becker, Forti and printing costs for Congress Moscow ....................... . Bank charges ........................................... ... ............... .. ............... .. .

Total payments ... ......... .............................. ..... , ... ... ................... .. .. ..

Balances 31st December 1972

U. S. Dollars D11tch Guilders

13.264,90

621,70 2.643,36

16.529,36

565,36 602,82

5.-

1.173,18

15.356,78

Deutsche Mark

-;- 24.302,59

56.261,88

31.959,29

12.829,49 19.129,80

-;- 31.959,29

58.876,85

58.876,85

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24 REPORT 1972

Payment of Annual Dues (asof31 Decembe,. 1972)

1966 1967 1968 1969 1970 1971 1972

UK ................................... 12 12 12 12 12 12 12

Hungary ................ .............. 1 1 1 1 1 1 1

France ································ 8 8 8 8 8 8 8 Czechoslovakia ·········· ·· ········· 3 3 3 3 3 3 3 Norway ··· ···················· ·· ····· 1 1 1 1 1 1 1

Italy ·································· 3 3 3 3 3 3 3 Belgium ·· ·············· ··· ········ ·· 5 5 5 5 5 USA ····· ······ ······· ····· ······ ···· 12 12 12 12 12 12 12

Denmark ···························· 1 1 1 1 1 3 3 Sweden ······························ 3 3 3 3 3 3 3 India ····· ·················· ··· ··· ···· 3 3 3 3 3 3 3 Switzerland ............ ............. 3 3 3 3 3 3 3

Germany ···················· ···· ····· 8 8 8 8 8 8 8 Israel ································· 1 1 1 1 1 1 1

Spain ................................. 3 3 3 3 3 3 3 Austria ······························ 1 1 1 1 1 1 1

Japan ································· 5 5 5 5 5 5 5 Yugoslavia 1 1 1 1 1 1 1 ················· ········· Poland 5 5 5 5 5 5 5 ······· ······· ················· Netherlands ···················· ··· · 3 3 3 3 3 3 3 Finland ··· ··························· 1 1 1 1 1 1

Rumania ............................. 1 1 1 1 1

USSR ................................. 12 12 12 12 12 12 12

Argentine ·········· ·· ··············· 1 1 1 1 1 1

Canada ··············· ······ ····· ·· ·· 8 8 8 8 8 8 8 Australia ............................. 1 1 1 1 1

Portugal ........................ ... .. 1 1 1 1 1

Bulgaria .... ... .. .................... 3 3 3 3

Bank Accounts of IUTAM Treasurer: Prof. H. Gortler, Sonnhalde 90, D 78 Freiburg i. Br. (Germany) Chemical Bank and Trust Company, Brooklyn Branch, New York, N.Y. (USA) R. Mees en Hope, Oude Delft 165, Delft '(Netherlands) Deutsche Bank A.G., Filiale Freiburg, D 78 Freiburg i. Br. (Germany)


Representation in other organizations ICSU

Prof. W. T. Koiter, Vice-President of IUTAM, represents IUTAM in the Executive Committee of the International Council of Scientific Unions. (Report p. 41) . CODATA

Prof. F. K. G. Odqvist acts as Representative of IUTAM at the Committee on Data for Science and Technology. (Report p. 42). COSPAR

Prof. Maurice Roy, Vice-President of IUTAM acts as Representative of JUT AM on the Committee on Space Research. (Report p. 43). ICA

Prof. M. J. Lighthill represents IUTAM as an associate member of the In-ternational Commission of Acoustics under IUPAP. (Report p. 45) . IMCO

Prof. K. Wieghardt acted as representative of IUTAM at the 5th session of the Joint Ad Hoc Group for the Study of External Forces Affecting Ships. (Report p. 45) . SCOPE

Dr. F. N. Frenkiel acts as the representative of IUTAM in the Special Com-mittee on Problems of the Environment.

Donations In 1972

At the 3rd General Assembly of IUTAM it has been decided to publish every year a list of persons and institutions who rendered support to IUT AM during the course of the past year. The Bureau is pleased to publish the fol-lowing list for the year 1972:

The German Research Association provided generous financial support to refray all expenses of the office of the Treasurer of IUTAM in Freiburg i. Br .

The Superintendent of the Admiralty Experimental Works at Haslar, Shell, Institution of Mechanical Engineers and the Chairman and Committee of Lloyd's generously provided facilities and financial support to the Joint IUTAM/ ITTC Symposium on Directional Stability and Control of Bodies Moving in Water.

The Science Research Council provided assistance to the IUT AM Sympo-sium on Stability of Stochastic Dynamical Systems.

The German Science Foundation, the Ministry of Cultural Affairs in Baden-Wiirttemberg, the Karlsruhe Alumni Association, the City of Karlsruhe, the Klein, Schanzlin & Becker Foundation, the Landesgewerbeamt Karlsruhe, and the Community Leader, US Army, Karlsruhe provided generous financial sup-port for the organization of the Joint IUT AM/ IAHR Symposium on Flow-Induced Structural Vibrations.

26 REPORT 1972

APPENDICES Summary Record

of

the General Assembly of IUTAM at Moscow on 24 August 1972

The General Assembly was held in room 1408 of the Moscow State Univer-sity, USSR, on 24 August 1972 at 20.00 hours. Present: a) Representatives and observers of adhering organizations Argentine: - ; Australia: R. RADOK; Austria:-; Belgium: F. BUCKENS, B. FRAEIJS de VEUBEKE; Bulgaria: - ; Canada: J. H. BLACKWELL, P. G. GLOCKNER, J. F. KEFFER, F. P. J. RIMROTT; Czechoslovakia: J. JERIE; Denmark: F. NIORDSON, V. TVERGAARD; Finland: M. RANTA; France: L. GAUTHIER, P. GERMAIN, R. LEGENDRE, M. ROY; BRD: E. BECKER, H. GORTLER; Hungary: A. BOSZNAY; India: - ; Israel: M. REINER; Italy: C. CATTANEO; Japan: I. TANI; Netherlands: C. de PATER, J. 0. HINZE; Norway:-; Poland: W. NOWACKI, W. OLSZAK, W. FISZDON; Portugal: E. R. de ARANTES e OLIVEIRA; Rumania:-; Spain:-; Sweden: S. BERNDT, J. HULT; Switzerland: N. ROTT; UK: G. K. BATCHELOR, R. E. D. BIS-HOP, M. J. LIGHTHILL, L. MAUNDER, P.R. OWEN; USA: B. BUDIAN-SKY, C. DRUCKER, F. N. FRENKIEL, N.J. HOFF, E. H. LEE, W. PRA-GER; USSR: L. I. SEDOV, A. A. ILYUSHIN, G. K. MIKHAILOV; Yugo-slavia: - . b) Elected members: G. TEMPLE, F. K. G. ODQVIST. c) Representing the Congress Committee: W. KOlTER. d) Specially invited observers.

Deutsche Akademie der Wissenschaften zu Berlin: G. SCHMIDT; Inter-national Committee on Rheology : R. S. RlVLIN.

Absent members represented by proxies: Y. H. KU •(Represented by N. HOFF).

Agenda

The following agenda for the meeting was approved : 1. Opening of the meeting by the President. 2. Report of the Secretary General. 3. Report of the Treasurer and discussion of annual dues. 4. Report of the President on relations with ICSU. 5. Report of the Secretary of the Congress Committee of IUTAM. 6. Adhering organizations

(a)

(b)

INTERNATIONAL UNION OF THEORETICAL AND APPLIED .MECHANICS

Applications for membership: (i) Comision Nacional de Investigacion

Cientifica y Tecnologica (Chile). (ii) Deutsche Academie der Wissenschaften zu Berlin (DDR). Other information.

7. Affiliated organizations (a) Application for membership:

The International Centre for Heat and Mass Transfer. (b) Other information.

8. Constitution of the Bureau for the period 1972-1976. 9. Matters regarding Inter-Union Committees and Commissions.

10. Cooperation with other organizations. 11. Report of the Study Group on General Assemblies. 12. Discussion of and decisions regarding future lUTAM symposia. 13. Regional cooperation. 14. Date and venue of the next General Assembly. 15. Any other business.

Pro(eedirzgs of the General Assembly

Item 1 -Opening of the meeting by the President.

27

The Prof. W. KOlTER opened the meeting and greeted all members and tnv1ted observers welcome. A special welcome was extended to Prof. M. REINER, the "nestor" of the Assembly. Prof. KOlTER also thanked the hosts for the arrangements.

The agenda was unanimously adopted. Item 2 - Report of the Secretary General.

The Secretary-General, Prof. F. NlORDSON submitted the following report to the General Assembly on the activities of lUT AM since the last General Assembly in Liege on 27 August 1970. Mr. President, Dear Colleagues,

It is my solemn duty to open my report with a record of members of the General Assembly who have died since our last Congress in Stanford in 1968. May I ask you to stand in honor of our deceased colleagues:

Professor W. TOLLMIEN, former Director of the Max-Planck-Institut fiir Stromungsforschung in Gottingen and former member of the Congress Com-mittee, who died on 25 November 1968.

Professor G. A. CROCCO, a long-standing member of our General As-sembly and former member of the Congress Committee, who died in 1970.

Professor Henri VILLA T, Member of the French Academy of Sciences and

28 REPORT 1972

former President of the French National Committee of Mechanics, who died on 19 March 1972.

Sir Richard SOUTHWELL, Fellow of the Royal Society, former President of the Congress Committee and President of Congress in London in 1948, who died in December 1971.

Professor Stephan TIMOSHENKO long-standing member of the Congress Committee, who died on 29 May 1972.

Our sympathy and grateful thoughts for their devoted work for our com-mon cause go to their families and nations.

I) National Adhering Organizations Since our last meeting two years ago there has been some changes in the

representation of our national adhering organizations.

(1) Belgium Professor L. TISON has retired from his post as President of the National

Committee and has been replaced by Professor B. FRAIJS de VEUBEKE. Professors P. van EEPOEL and F. HAUS have asked to be relieved from their duties as representatives and have been replaced by Prof. B. FRAEIJS de VEUBEKE and Prof. P. JANSSENS. (2) Canada

The National Research Council of Canada has appointed the following representatives: Professors J. H. BLACKWELL, P. G. GLOCKNER, James F. KEFFER and F. P. J. RIMROTT of whom, of course, Prof. RIMROTT has already been a member of the General Assembly for many years.

(3) Denmark The Danish adhering organization was admitted last year in category II by

the General Assembly, and Prof. Frank ENGELUND was appointed a new representative. ( 4) Finland

The Finnish National Committee has appointed Prof. Matti RANTA as a representative in succession of Prof. S. E. STENIJ.

(5) Italy The Italian Association has announced that Prof. Carlo FERRARI has been

appointed a representative and succeeds Prof. Bruno FINZI.

(6) Poland The Polish National Committee has announced that in addition to Profes-

sors W . NOWACKI and W. OLSZAK, Prof. W. FISZDON has been ap-pointed a representative. (7) Portugal

Following the original plans after the admission of Portugal in the Union, a "Portugese National Committee on Theoretical and Applied Mechanics" has


been established, which has now replaced the National Laboratory of Civil Engineering as adhering organization of IUT AM.

Professor E. R. de ARANTES e OLIVEIRA is chairman of the National Committee and the new representative on the General Assembly. (8) Spain

The Spanish adhering organization has announced that Prof. Rafael CALVO has been replaced by Sr. Luis de AZCARRAGA y PEREZ CABALLERO. (9) U.K.

The Royal Society has appointed their representatives to the General Assembly; among these, Prof. P. R. OWEN succeeds Prof. D. KOCHEMANN. II) Affiliated Organizations (1) International Centre for Mechanical Sciences (CISM)

The Bureau has appointed Prof. H. GORTLER to be the representative of IUTAM in the scientific council of the Centre, which has appointed Prof. L. SOBRERO as the representative of the Centre at our General Assembly. III) Meetings of the Bureau ( 1) First Meeting.

The Bureau met in Copenhagen on 5 October 1971. A summary record of this meeting was mailed to all members of the General Assembly shortly after the meeting and this record will also appear in our next Annual Report. At this meeting the Bureau appointed a Study Group for the purpose of exploring the possibilities of making meetings of the General Assembly, particularly those that fall between the International Congresses, of more interest to the parti-cipants. A report from this Study Group will be discussed under Item 11. ( 2) Second Meeting.

The second meeting of the Bureau was held last Monday. It was mainly dedicated to the preparation of this General Assembly. IV) Symposia held since 011r last General Assembly.

Since our last General Assembly in 1970 the following 7 symposia spon-sored or co-sponsored by our Union have been held:

In 1971

(1) Joint IUTAMJIUGG Symposium on Flow of Multiphase Fl11ids in Poro11s Media, Calgary, 12-14 May 1971. (Chairman: Prof. W . D. BAINES).

(2) IUTAM Symposi11m on Unsteady Bormdary Layers, Quebec, 24-28 May 1971. (Chairman: Prof. E. A. EICHELBRENNER).

(3) JUT AM Symposium on Non-Steady Flow of Water at High Speed, Lenin-grad, 22-26 June 1971. (Chairman: Prof. L. I. SEDOV).

(4) IUTAM Symposium on the Dynamics of Ionized Gases, Tokyo, 13-18 September 1971. :(Chairman: Prof. M. J. LIGHTHILL).

30 REPORT 1972

In 1972

(1) JUT AMf iTTC Symposium on the Directional Stability and Control of Bodies Moving in Water, London, 17-21 April 1972. (Chairman: Prof. R. E. D. BISHOP) .

(2) JUT AM Symposium on the Stability of Stochastic Dynamical Systems, Coventry, 10-14 July 1972. (Chairman: Prof. J. A. SHERCLIFF).

(3) IUTAMf lAHR Symposium on Flow-Induced Stmctural Vibrations, Karls-ruhe, 14-16 August 1972. (Chairman: Prof. E. NAUDASCHER).

As usual, final reports ·on these symposia will appear in our Annual Reports. V) Futrtre Symposia already decided by the General Assembly.

The following symposia are now planned: (1) Second IUTAMf lUGG Symposittm on Turbulent Diffusion in Environ-

mental PoJJution, Charlottesville, USA, 8-14 April 1973. (Chairman: Dr. F. N. FRENKIEL).

The Bureau has appointed the following Scientific Committee for IUTAM: Dr. F. N. FRENKIEL (Chairman) Prof. A. FAVRE Prof. J. 0. HINZE Prof. M. LANDAHL Prof. E. PALM Prof. E. PASQUILL

and IUGG has appointed another six members: Profs. GRASHOFF, JUNGE, MUNN, OBOUHOV, PANOFSKYand PRIESLEY. The Scientific Committee is now in process of selecting participants. IUTAM and IUGG have each allocated $ 3000 to support the symposium and the organizers have received encouragement regarding additional assistance from the American Geophysical Union and the National Research Council.

During its recent meeting the Bureau has decided to increase the allocation from IUTAM to $ 4000 in the hope and expectation that IUGG increases its allocation accordingly. Furthermore, the T reasurer and the Secretary-General were empowered to make another $ 1000 available if urgently needed. (2) IUTAM Symposittm on Optimization in Stmctrtral Design, Warsaw, 21-25

August 1973. (Chairman: Prof. W. OLSZAK). The Bureau has appointed the following Scientific Committee:

Prof. W. OLSZAK (Chairman) Prof. J. H. ARGYRIS Prof. P. BROUSSE Prof. F. NIORDSON Prof. W. PRAGER Prof. M. A. SAVE Prof. A. SAWCZUK


who is also in charge of the local organization. The committee has already in-vited a number of scientists, and the organization is proceeding well.

The Bureau has allocated $ 4000 for the symposium. (3) JUT AM Symposium on the Photoelastic Effects and their Applications,

Bruxelles, 3-9 September 1973. (Chairman: Prof. J. KESTENS). The Bureau has appointed the following scientific committee:

Prof. J. KESTENS (Chairman) Prof. G. BARTOLOZZI Prof. D. DRUCKER Dr. H. FESSLER Ing. A. ROBERT Prof. L. M. KACHANOV

The conference is designed to give the state of the arts in three different fields: methods of photo-elasticity, rheo-optics in physico-chemistry, and the interaction in a continuum between a material and an electromagnetic field. A number of other aspects will be considered in two or three general lectures. Some speakers have already been invited and have accepted, and the Bureau has the impression that the symposium is proceeding well. At its recent mee-ting the Bureau allocated $ 4000 for this symposium.

Plans for further symposia will be discussed today under item 12 of our agenda. VI) Publications of JUT AM

Since our last meeting in Liege in 1970 the following IUT AM publications have appeared:

( 1) IUTAM Annual Report 1970 (2) IUTAM Annual Report 1971 (in print) (3) A review of the JUT AMj lUP AP Symposium on Electro-hydrodyna-

mics by J. R. MELCHER was published in the Journal of Fluid Mechanics, Vol. 40, Part 3.

( 4) Proceedings of the Symposium on the Dynamics of Satellites, edited by B. MORANDO and published by Lange & Springer in July 1970.

(5) Proceedings of the Joint IAUj lUTAM Symposium on Cosmical Gas Dynamics, edited by H. J. HABING and published by the D. Reidel Publish-ing Co. in 1970.

( 6) Proceedings of the JUT AM SympositJm on High Speed Computing of Elastic Stmctures, 2 volumes, edited by B. FRAEIJS de VEUBEKE and pub-lished by the University of Liege, 1971.

(7) Proceedings of the JUT AM Symposittm on Instability of Continuous Systems, edited by H. LEIPHOLZ and published by Springer-Verlag 1971.

(8) Proceedings of the Second JUT AM Sympo.rirtm on Creep in Stmctttres, edited by J. HULT and published by Springer-Verlag 1972.

32 REPORT 1972

(9) Proceedings of the JUT AM Symposium on Unsteady Bottndary Layers, containing a review of the subject by J. T. STUART and all papers presented, published by the University Laval. (2 volumes containing 2000 pages):

It is my experience in the secretariat of IUT AM that the proceedmgs of our symposia are highly valued books. An indication of this is the continuous flow of requests for copies, which are transmitted to the publishers. There should be every reason, also in the future, to let the high quality of the con-tents of our proceedings be matched by a suitable bending.

VII) Representation in other organiza#om ( 1) Professor E. BECKER acted as our representative at the UNISIST In-

tergovernmental Conference 4-9 October 1971. Professor Becker has submitted a very thought-provoking report on this conference.

(2) The Vice-President, Prof. M. ROY acted as our representative on the Executive Committee of ICSU until September 1971. Since the meeting in Ottawa in September 1971 our President has taken over. He will report on the development in ICSU under item 4 of our agenda today. . .

(3) The Vice-President, Prof. M. ROY has acted as our representative m COSP AR and had kindly consented to continue in this office.

(4) Prof. F. K. G. ODQVIST has represented the Union in CODATA and has submitted a report based on available documents.

(5) Dr. F. N. FRENKIEL has represented the Union in SCOPE (Scientific Committee on Problems of the Environment) and participated in the Com-mittee meetings in Canberra 1971 and in London 1972.

(6) Professor L. SEDOV represented the Union at the XV General As-sembly of IUGG last year.

(7) Professor M. J. LIGHTHILL represented the Union at the XIV As-sembly of the International Astronomical Union.

(8) Professor K. WIEGHARDT represented the Union at the 5th session of the Joint Ad Hoc Group for the Study of External Forces Affecting Strips. He has reported on some interesting progress made on the prediction of wave refraction in areas of complex bottom topography.

(9) The President, Prof. W. KOlTER, and the Secretary-General, Prof. F. NIORDSON, participated in the Annual Meeting of IFToMM's Executive Council in January 1971. Agreements concerning exchange of information were reached and co-operation on future symposia was discussed.

( 10) Professor L. SOBRERO represented the Union at the second General Assembly of IFToMM last year.

(11) Professor F. HAUS represented the Union at the 22nd International Astronautical Congress in September 1971.

VIII) Next meeting of the Bttreau The Bureau of IUT AM will meet in Bruxelles on 3 September 1973.

INTERNATIONAL UNION OF THEORETICAL .AND APPLIED MECHANICS 33

Mr. President, Before ending my report I should like to add a few more words. I have

soon served the Union my full four-year term as Secretary-General. The task of the Secretary isn't always easy and the burden would have been heavy if I hadn't had the guidance and the support of yourself, Mr. President, and of the Vice-President, the Treasurer, and the other members of the Bureau. You have always been willing to put your wisdom and your experience at my disposal. I believe that our friendly and constant cooperation has resulted in some progress and I know that I have derived great pleasure from it. I am also deeply indebted to all the members of the General Assembly for their readiness to cooperate, and for their comments, their suggestions and their response to my circular letters. I thank all of you very much.

The report of the S:ecretary-General was unanimously adopted.

Item 3 - Report of the Treasurer and discussion of annual dues. The Treasurer, Prof. H. GORTLER, submitted his report on receipts and

expenses. He pointed out that the margin appearing in the balance was a ne-cessary precaution in case the subvention from ICSU would be insufficient. He felt, that at the present time there was no necessity for a raise of anuual dues.

The report of the Treasurer was unanimously adopted. Item 4 - Report of the President on relations with ICSU.

The President, Prof. W. KOlTER reported that he himself had attended the 13th meeting of the ICSU Executive Committee in Ottawa, 29-30 September 1971 since Prof. M. ROY had been unable to do so. The most important item at this meeting was a discussion of the Report of the Ad Hoc Committee on Role and Structure of ICSU.

The general feeling was that the role of ICSU was well described by the Ad Hoc Committee.

However, the proposal of the Ad Hoc Committee for the constitution of the new Executive Committee in which the balance between National Members on one hand and the Scientific Unions on the other was changed in favor of the former, was given very little support. The 14th General Assembly of ICSU will be held in Helsinki 16-21 September 1972; Prof. W. KOlTER will again represent IUT AM. Item 5 - Report of the Secretary of the Congress Committee of IUTAM.

Professor E. BECKER summarized his reports on the activities of the Exe-cutive Committee of the Congress Committee and of the International Papers Committee of the 13th Congress. The written reports were available on request.

An important problem was the selection of papers to be presented at the Congress. Prof. BECKER mentioned that the principal criterion for selection was scientific quality judged from the abstract. The criteria of adequate natio-

34 REPORT 1972

nal representation and of topical balance of the programme were only secon-dary to the predominant concern for quality.

The total number of papers accepted was as follows: Solid mech. Fluid mech. Total

USSR .. ... ................ .. .................. . USA ........... . .............................. .. UK .............. ... .... . ...... ........... . . ... . France . .............. .. . ... ..... ...... ......... . F. D. R . .......................... . ........... .

Australia ...................... . .. . ... ... .. .... . Belgium ..................... . ................ . Bulgaria ...................................... . Canada . ...... . ... . ...... . ........ .. ........... . CSSR ................ .............. .......... .. DDR ......................................... . Denmark .. . . .......... .. ........... ........... . Hungary ......... .... ..... ..... ............... . India ....... . .................. .. .............. . Israel . . .................................... .... . Italy ........... ..... . .. . ....................... . Japan ................. . ...................... .. Netherlands . .. ...... ............... ...... . . .. . Poland . ..... ....... ..... .. ................ .. . . . Portugal ...................................... . Rumania ............... .. ...... .. ......... .. . . . Sweden . .................................. .. .. . Switzerland ........... .. . ..................... . Turkey . ........ . . .. .. ... ........ ....... ..... .. ..

33 24

8 9 9

1 1 1 4 3 2 3 1 2 2 3 4 1 6 1 1 2

1

24 24 12

9 7

3 1

6 1 1 2

3

3 3 3

1 1 1

57 48 20 18 16

4 2 1

10 4 3 5 1 5 2 3 7 4 9 1 2 3 1 1 1 Yugoslavia . . .. . .. . .. . .. . .. . .. . . . . . . . . . . . . . . .. . 1 -----------------------

122 106 228

Prof. BECKER also summarized the decisions regarding the allocation of travel grants. 54 grants were allocated, varying between US S 50 and $ 300 per grant. A total amount of $ 6000 were allocated for this purpose.

Netherlands had renewed its invitation to hold the 14th Congress (1976) in Delft. This invitation had been gratefully accepted by the Congress Com-mittee*.

* The 14th Congress will be held in Delft (Netherlands), August 30- September 4, 1976.


For the 15th Congress (1980) the Congress Committee had received invi-tations from Canada and D enmark and had recently been notified of two further invitations, namely from Poland and Israel.

The Congress Committee had furthermore discussed proposals for the elec-tion of new members. However, this matter needed further consideration and the Congress Committee did not feel it was ready yet to submit to the General Assembly any new proposals, with one exception. The Congress Committee re-commended the General Assembly to elect Prof. W. FISZDON a member of the Congress Committee. On the condition that this proposal was supported by the General Assembly, the Congress Committee had decided to elect Prof. FISZDON a member of the Executive Committee.

The General Assembly unanimously elected Prof. W. FISZDON a member of the Congress Committee.

Item 6 - Adhering organizations. (1) Chile

The Secretary-General gave the background of the application as follows: On 30 April 1970 the Executive Secretary of ICSU, Mr. BAKER, had a visit from a representative of the Embassy of Chile in Rome. H e explained that the newly established "Comision Nacional de Investigacion Cientifica y Tecnolo-gica" had been authorized by the President of Chile to join all 16 Unions of ICSU. This was to be considered as a formal application.

Further correspondence had resulted in a supporting letter from this Com-mission giving detailed information about scientific activity in Chile in the field of theoretical and applied mechanics. The Bureau had considered this informa-tion and had come to the conclusion that the scientific activity, as evident from the supporting letter, could not be considered sufficient for membership.

The supporting letter had been distributed to all members of the General Assembly.

The General Assembly hereupon declined the application.

(2) DDR A formal application dated 20 September 1971 for membership in category

III, including supporting material had been received from the German Aca-demy of Sciences at Berlin. Copies of the application with appendices had been distributed to all members of the General Assembly.

Upon the recommendation of the Bureau the General Assembly unanimously voted for accepting the German Academy of Sciences of Berlin in category III as an adhering organization of IUT AM.

(3) So11th Africa The Secretary-General reported that the National Research Institute for

Mathematical Sciences of the South African Council for Scientific and Indu-strial Research had notified the Secretariat that it intended to apply for mem-bership. Information had been forwarded.

36 REPORT 1972

( 4) Turkey The Secretary General reported that he had been in correspondence with

several scientists in Turkey working in the field of mechanics. As a result a National Committee for Mechanics was in the process of being established there with the cooperation of officials of the Ministry of Education. Elected members of the General Assembly

The General Assembly elected Prof. N . HOFF (USA) a member of the Assembly for the period 1972-1976.

For the same period the following members were re-elected: Prof. ]. ACKERET (Switzerland) Prof. J. M. BURGERS (USA) Prof. S. GOLDSTEIN (USA) Prof. Y. H. KU (USA) Prof. F. ODQVIST (Sweden) Prof. W. RUBINOWICZ (Poland) Sir G. TAYLOR (UK) Prof. G. TEMPLE (UK) Prof. W. WEIBULL (Sweden)

Item 7 - Affiliated organizations (1) Int. Centre for Heat and Mass Tramfer

On the recommendation of the Bureau, the General Assembly decided to admit the International Centre for Heat and Mass Transfer as an affiliated organization of IUT AM. (2) Int. Committee on Rheology

The Secretary-General informed the General Assembly about his corres-pondence with the Int. Committee on Rheology. If a formal application for affiliation is received soon, the matter will be decided by postal ballot accord-ing to Art. V of our Statutes.

Prof. E. M. HORIO, chairman of the Int. Committee has invited IUTAM to designate a representative to attend the business meetings of the Committee in Lyon on 4 and 6 September 1972. The Bureau has appointed Prof. E. H. LEE to represent IUT AM. Item 8 - Constitution of the Bureau for the period 1972-1976

The General Assembly unanimously adopted the following proposals for the constitution of the Bureau for the period 1972-1976, becoming effective on 1 November 1972:

President: Vice-President: Secretary-General: Treasurer:

H. G6RTLER W. KOlTER F. NIORDSON D. DRUCKER


Members: R. LEGENDRE M. ]. LIGHTHILL W. OLSZAK L. I. SEDOV

37

The President, Prof. W. KOlTER thanked the two members of the Bureau who were now leaving, Prof. M. ROY and Prof. N . HOFF, for the services they had rendered over the years. He mentioned that the structure of IUT AM as it appears today was to a great extent the result of the work of M. ROY, who had been an officer of the Bureau for 16 years.

Prof. W. KOlTER also thanked Prof. G. BATCHELOR, who now wished to be relieved of his duties, for his long-standing service in the Congress Com-mittee.

Item 9 - Matters regarding Inter-Union Committees and Commissions. Dr. F. N. FRENKIEL reported on the activities of the Scientific Committee

on Problems of the Environment (SCOPE) , in which he had participated as a representative of IUTAM.

With regards to the ICSU Committee on the Teaching of Science, which IUT AM has not yet joined, several names were mentioned as possible represen-tatives of IUT AM.

Item 10 - Cooperation with other organizations. No Business.

Item 11 - Report of the Study Group on General Assemblies. The Bureau had received a "Report of the Study Group on Future General

Assemblies". However, there had not been time for the members of the Bureau to study this report and the Bureau was therefore not in the position to make any recommendations as yet.

The General Assembly resolved that the report should be made available to the members of the Assembly and authorized the Bureau to make the decisions regarding the practical arrangements of the next General Assembly in 1974.

Item 12- Discussion of and decisions regarding future IUTAM Symposia. In addition to the three symposia already decided for 1973 and described

above under Item 2 in the report of the Secretary-General two further propo-sals have been recommended by Study Groups appointed by IUT AM:

( 4) JUT AM Symposium on the Mechanics of the Contact between Deformable Bodies

In agreement with the suggestion made by the Study Group, the General Assembly decided that this symposium should be held 20-23 August 1974 at the University of Technology at Enschede, Netherlands.

38 REPORT 1972

(5) JUT AM Symposium on the Mechanics of Visco-Elastic Media and Bodies

Also, in agreement with the suggestions made by the Study Group, the General Assembly decided that this symposium should be held in USSR in 1974, the exact date to be fixed as soon as possible in consultation with the host organization.

It was also decided to invite the International Committee on Rheology to cooperate.

(6) Joint !AU j iUT AM Symposium on the Stability of the Solar System and of small Stellar System.r

The International Astronomical Union had invited IUT AM to cosponsor this symposium to be held i Warsaw, Poland, 5-8 September 1973. The General Assembly decided to accept the invitation.

In response to the circular letter 53 GA of 17 July 1972, the Secretary General had received a large number of replies. Giving 4 points for top priority down to 1 point for the 4th priority, the following result was ob-tained:

1. Stochastic Problems in Solid Mechanics 2. Buckling of Structures 3. Fundamental Aspects of Biomechanics 4. Dynamics of Rotors 5. Dynamics of Vehicle Roads and Railway Tracks G. High-Velocity Deformation of Solids 7. Aerodynamics of Flows with Large Velocity Fluctuations 8. Crack Problems and Application to Fracture Mechanics 9. Second Symposium Transsonicum

l O. Optical Techniques in Fluid and Solid Mechanics 11. Hydrodynamics of Stratified Fluids 12. Methods of Optimization in Aero- and Hydromechanics 13. Selected Problems of Dynamics of Complex Systems 14. Problems of Instationally Motion of Fluids

"(39 points) (34 points) (30 points) (29 points) (25 points) (20 points) (19 points) (19 points) (19 points) (18 points) (17 points) ( 5 points) ( 5 points) ( 1 points)

In agreement with the proposals the General Assembly decided to sponsor the following symposia:

(7) Symposium on Buckling of Stmctttres, Harvard University, Cambridge, Mass. (USA)

(8) Symposium on Dynamics of Rotors, Technical University, Lyngby, (Denmark)

(9) Second Symposium Transsonictmt, Aachen or Vienna.


1975 10) Dynamics of Vehicle Roads and Railway Tracks,

Delft, (Netherlands)

39

With regards to the proposal "Stochastic Problems in Solid Mechanics" Sir M. J. LIGHTHILL suggested that the scope should also encompass fluids. The General Assembly requested the Bureau to appoint a Study Group for working out a detailed scope for this symposium, which should preferably take place in Poland in 1975.

The General Assembly further decided that a Study Group should be appointed to reconsider the proposal concerning the scope of a symposium on "Fundamental Aspects of Biomechanics", which should take place in Italy in 1975, in order to make it more limited and explicit.

The problem of selecting a further topic for a (fourth) IUTAM symposium in 1975 was discussed at the General Assembly.

It was decided to let the Bureau make the final choice, based upon the pre-ference indicated by members of the General Assembly through correspondence during the autumn of 1972. Consideration could then also be given to late proposals, and the members of the General Assembly were urged to submit any such new proposal to the Secretary-General not later than 30 September 1972.

Item 13 - Regional cooperation. Explanatory material had been distributed to members of the General As-

sembly before the meeting. The General Assembly decided to establish a Study Group to investigate the need, scope and organization of regional cooperation within the field of theoretical and applied mechanics, so that the coordination of these regional activities with IUTAM could be ensured. The following mem-bers were appointed to the Study Group:

W . KOlTER '(Chairman) G. BATCHELOR E. BECKER D. DRUCKER W. FISZDON L. I. SEDOV

Item 14 - Date and venue of the next General Assembly. The next General Assembly will be held in August 1974, the venue to be

decided by the Bureau.

Item 15 - Any other business. No other items. The meeting closed at 22.45 hours.

40 REPORT 1972

Report on

the activities of the Congress Committee during 1972 The main activity of the Executive Committee (EC) of the Congress Com-

mittee during the first half of 1972 was connected with the coordination of the work of the International Papers Committee (IPC) that had been established by the EC and had been given the final responsibility of selecting papers sub-mitted for presentation at the 13th International Congress of Theoretical and Applied Mechanics (Moscow, 21-27 August 1972). The secretary of the EC collected the summaries and abstracts of all papers submitted, and distributed them among the five members of the IPC. The papers by authors from USA, USSR, UK, France and FR Germany were preselected by national committees, and only those papers that passed the preselection reached the IPC through the secretary of the EC. The secretary also collected the applications for travel grants to young scientists who wanted to attend the 13th Congress. The IPC took the final decision on the contributed papers and on the travel grants at a meeting from 5 May to 8 May 1972 in Darmstadt, Germany. Out of 339 papers submitted from "smaller" countries 69 papers were accepted, together with 159 papers, out of a total of about six times that number, submitted by authors from the five countries mentioned above. The limit of 228 papers had been established through a previous decision of the EC, in order to allow not less than 30 minutes for presentation and discussion of a paper without unduly increasing the number of parallel sessions at the 13th Congress.

On the morning of 20 August 1972 a meeting of the EC, and on the after-noon of the same day a meeting of the entire Congress Committee took place in Moscow. One of the results of these meetings is a change in the membership of the EC: Professors Batchelor, Hoff and Koiter left the EC, Professor Becker being the only member staying on the Committee (as secretary). Professors Boley, Fiszdon, Gi:irtler (as president) and Muskhelishvili became members of the EC. Because Professor Fiszdon was not yet a member of the Congress Com-mittee his nomination had to be confirmed by the General Assembly of IUTAM at its meeting on 24 August 1972.

At the two meetings mentioned it was also decided to limit the term of ser-vice for future members of the Congress Committee (tentatively to eight years), and to try to enlist younger colleagues as members. The present members of the Congress Committee are kindly requested to submit suggestions of possible new members to the secretary of the EC before the next meeting of the General Assembly in 1974.

The 13th International Congress of Theoretical and Applied Mechanics that was held at Moscow State University from 21 August to 26 August 1972 was the culmination of the Congress Committee's activities during the four years from September 1968 to August 1972.


During the last months of 1972 the secretary of the EC was busy with col-lecting and editing the manuscripts of the general and sectional lectures of the 13th Congress, which will be published in the proceedings of the congress by Springer-Verlag. Professor Mikhailov, Moscow, and the secretary of the EC are the editors of the volume. Professor Mikhailov secured the English transla-tion of all the manuscripts that were originally in Russian, so that all contribu-tions to the proceedings will be in English.

E. Becker

Report on

ICSU General Assembly

Helsinki 17-21 September 1972

The General Assembly was preceded by an extraordinary General As-semblee in which the new statutes were adopted. A revision of the statutes has been under discussion for a number of years. The need of a revision was pri-marily due to the fact that the former Executive Committee, consisting of re-presentatives of all unions and of 11 national organizations, was too large a body to handle the daily business of ICSU. It is true that in effect many matters were delegated to the Board of Officers, but this smaller body had to act on many occasions without proper authority. Various drafts for new statutes have been discussed in the past few years and rejected because they reduced the in-fluence of the scientific unions too much. The revision approved in the extra-ordinary General Assembly held at Helsinki establishes a new Executive Board, consisting af nine members which exercises the executive powers, as well as a General Committee, on which all 17 unions are represented as well as 11 national organizations, which larger body is responsible for all matters reflect-ing the scientific policy of ICSU. This compromise seems to do justice both to the demands of daily matters and to the need of a strong influence of the scien-tific unions on the general scientific policy of ICSU. It is also of some interest to note that the original proposal to appoint a presidentelect, who would suc-ceed the current president at the end of his term of office, was rejected. The new statutes provide for the election of a single vice-president who will hope-fully be elected president later but this appears nowhere in writing in the statutes. It would seem that the statutes adopted in Helsinki, if by no means ideal, adequately reflect the most essential views expressed on various occasions in IUTAM.

One of the most important decisions of the ordinary General Assemblees was the approval of the proposal by the standing Finance Committee to increase the annual dues by 40 percent from 1974. Only two national organizations voted

42 REPORT 1972

against this proposal, and it may therefore be hoped that it will be put into effect. Much attention was given to several of the larger projects of ICSU. Par-ticularly impressive was the report on the present status of the Global Atmo-spheric Research Programme (GARP). One of the lectures during the meeting by R. W. Stewart gave an exciting review of results obtained sofar. Further lec-tures were given by J. J. Salomon on science policy and by I. Hustich on the future of the artie and sub-artie regions.

Several of the smaller meetings of the former Executive Committee and the new General Assemblee were held in the Hotel Intercontinental in Helsinki, but the full meetings of the General Assemblee were all held in the student center Diopoli of the University of Technology.

IV. T. Koiter

Report on CODATA

This report on the activities of ICSU, CODATA during 1972 is based upon the following documents:

CODATA, Memorandum 14th August 1972: Draft Minutes of the 7th General Assembly and the 16th Bureau Meeting, Le Creusot, France June-July 1972, with Annexes and Amendments so far. Only the following items (1) -(8) seem to me to be of special interest to IUTAM.

( 1) The Minutes of the 6th Annual Meeting of the General Assembly and the 14th Bureau Meeting of CODATA (Washington, D.C., July 1971, recorded in my 1972 CODATA Report) were approved after minor changes.

(2) In summarizing the Minutes of the 15th Bureau Meeting of CODATA, President Vodar commented upon the major possible change in the operation of COD AT A which concerns the frequency of the Bureau meetings etc. For fi-nancial reasons, in the future the Officers would meet twice a year, the Execu-tive Committee (Bureau) would meet only once a year, and the General As-sembly only every two years. It was proposed to present these ideas dearly in the minutes of this meeting in order to allow the Delegates and National Com-mittees to send their comments prior to the next Bureau meeting. At this meet-ing a more formal proposal would be prepared and distributed in March 1973 for final comments. No such proposal has been received so far.

(3) The broadened scope of the CODATA Constitution (see my CODATA Report 1972, item IV) was discussed. It had been unanimously carried by the 1971 General Assembly but was now criticized by several Delegates. Such wordings as "quality", "critical evaluation" and "systematic data" have to be more precisely interpreted, and a new version be prepared at the Bureau Meet-ing, January 1973, and distributed to the Delegates in March for final com-ments. No such version has however been received.

( 4) Further the President stressed that the Unions should be more involved in CODATA activities. Each Union should have at least one person, actively


interested in the data field as catalyst to stimulate interest. In my opinion, the present passive policy of IUTAM is quite adequate for the needs of IUTAM, Should on the other hand IUT AM Bureau change its mind on this point, I am quite willing to give up my present position as IUTAM Delegate of CODATA, to be replaced by someone more suited to act as "catalyst" for IUT AM.

(5) From the work of the CODATA Task Groups, worth mentioning here, I would like to draw attention to the new WFEOj CODATA Joint Working Group on Engineering Data, the result of the first meeting of which was presented at the conference at Le Creusot. No details from this meeting have however been received.

(6) A new Task Group on Transport Properties (referring to physical properties such as diffusion, but no further specified) is being planned as a result of a proposal from Professor S. T. Touloukian, Purdue Univ., USA, with the special view to consider interdisciplinary aspects. Five countries have re-ported interest. An annual budget of $ 2.400 is foreseen to meet the travel ex-penses for Task Group members.

(7) Regarding UNISIST (my 1972 Report, item V), it is reported and supported by ICSU that the need for implementation of UNISIST proposals, as stressed by UNESCO, is stressed regardless of the speed with which they are carried out.

'(8) The 8th COD AT A General Assembly will most likely be held on Sep-tember 10 and 11, 1973 in Stockholm, Sweden, subject to confirmation by the Royal Swedish Academy of Sciences. The Polish National Committee on COD AT A has offered to host the lOth G. A. in 1975.

Folke K . G. Odqvist

Rapport sur

Ia XVeme Assemblee pleniere de COSPAR (1972)

Cette XVeme Assemblee s'est tenue a Madrid, sur l'aimable invitation du Conseil Superieur de la Recherche Scientifigue d'Espagne, du 12 au 23 mai.

Cette confrontation interdisciplinaire, associant les sciences physiques et les sciences biologiques, a connu un succes particulierement marque car elle a reuni 839 participants venus de 32 pays et tous specialistes de Recherche Spatiale.

Selon la tradition deja etablie de ce jeune Comite Scientifique de ICSU, I' Assemblee comportait trois symposiums specialises, copatronnes par plu-sieurs Unions internationales participantes, ainsi que les seances de travail et les seances publiques des Groupes de Travail et Panels specialises de COSP AR, enfin les reunions plenieres ou se fixent les recommandations et resolutions du Comite, ainsi que les prochaines etapes de son travail.

44 REPORT 1972

Un rapport tres detaille d'environ 200 pages a ete publie sur ces travaux, et largement diffuse parmi toutes les organisations interessees, dont IUT AM. II ne peut etre question de le resumer en ce bref compte-rendu.

Le point sur lequel je voudrais seulement insister en le precisant est le suivant. Parmi les cooperations scientifiques internationales que COSP AR a vocation

de definir et de stimuler, celle qui interesse le plus directement IUTAM concerne Ia Dynamique generale de !'atmosphere.

Depuis plusieurs annees, les echanges de vues et d'idees sur les resultats les plus recents de Ia recherche spatiale ont mis en evidence Ia necessite d 'ela-borer cette Dynamique generale en y incluant les principaux effets physiques -ionisation et rayonnements compris- et physico-chimiques dont l'espace proche de notre planete, jusqu'a 150 a 200 km d'altitude, pour fixer les idees, est le lieu, effets et phenomenes parmi lesquels les echanges d'energie entre le Solei! et Ia Terre - son atmosphere, ses oceans et son sol indus - jouent un role majeur. Vaste domaine de recherche, ou une premiere etape a ete fixee, con-sistant a etudier le mouvement general de cette atmosphere. Un comite special a ete forme a cet effet, qui associe !'Organisation Meteorologique Mondiale (W.M.O., agence de l'O.N.U.) et plusieurs Unions sous l'egide de UGGI, avec participation de COSPAR. L'etude en question, denomrnee GARP (Global Atmosphere Research Program) est deja engagee sur la voie d 'une premiere rea-lisation.

Ces problemes requierent Ia participation d'authentiques Mecaniciens, selon !'extension moderne de notre Science ala Dynamique des systemes les plus com-plexes, a proprietes physiques et chimiques evoluant en meme temps que leurs elements constitutifs se deplacent. Au debut du siecle, des Mecaniciens ont elabore les premiers elements de la Dynamique de !'atmosphere mais pour sa partie tres proche de Ia Terre et en visant surtout !'explication des variations meteorologiques usuelles et proches de nous. Ce probleme s'est enormement elargi en altitude jusqu'a la rarefaction presque totale, et s'est renouvele en-tierement par 1' intervention de phenomenes plus complexes et tres divers, !'ensemble requerant une conception nouvelle et suffisamment globale.

Le representant de IUT AM a COSP AR, qui a eu l'honneur de presider ce Comite de 1962 a 1972 a continuellement encourage Ia prise en consideration puis le developpement de ces etudes auxquelles il souhaite que les Mecaniciens de IUTAM, notamment des jeunes, s'interessent desormais activement.

Ma11rice Roy


Report on

International Commission of Acoustics

The Commission met on 3 and 4 May 1972 in Paris. It was agreed to in-crease activities on Environmental Acoustics and make it the main theme of the 8th Congress to be held at Imperial College, London from 23 til 31 July, 1974, with subheadings as follows : (i) propagation of sound; (ii) sources and abatement of noise in machines; (iii) acoustics of air flow; (iv) sound reinforcement systems; ( v) speech communication; (vi) building acoustics; (vii) psychobiology of sound; (viii) socio-acoustics.

It was agreed that the 9th Congress will be held in Spain in 1977. Close relationships have been established between ICA and FASE (the

Federation of Acoustical Societies of Europe which recently came into being). An important ICA function is the Information and Coordination Service

which has recently been very active in various ways which include the circu-lation of "lists of events" and "lists of laboratories" in Acoustics.

There was a special ICA Symposium on Atmospheric Acoustics and Noise Propagation at the US National Bureau of Standards from 27 to 29 Septem-ber 1972.

The next meeting of the Commission itself is being held at the Royal Society, London on 21 and 22 May 1973.

f. Lighthi/1

Report on

the 5th session of the "Joint Ad Hoc Group for the Study of External Forces Affecting Ships"

IMCO, London, 15 to 18Janttary, 1973

The Group now believes that sufficient information on waves and winds is available in documents already submitted or in other papers such as the report of the ISSC Environmentals Condition Committee, prepared for the 5th ISSC (Intern. Ship Structure Conge.) in Hamburg, Sept. 1973. Therefore, it has been suggested that a working party should be established with the task of investigat-

46 REPORT 1972

ing the influence of the environment on ship stability particularly in causing capsizing. This work will no doubt identify new problems to be tackled by the existing group on external forces which will not meet again before 1975. II. Some special points.

In the report mentioned there is a compilation of frequencies of occurence of gales, storms, hurricanes, and tropical cyclones in general over the seas and data on gusts.

Wave refraction due to submarine topography has been further studied. Ship model studies under simulated conditions either in tanks or in coastal areas could yield information on useful design criteria for small ships in coastal waters. It is essential that such tests be conducted within the framework of random process theory and using concepts of spectral analysis including non-linear effects with special emphasis on rolling motion.

Although it is agreed that within a short interval, of the order of 3 or 4 wave cycles, the higher well-formed waves may be approximately represented by a regular wave train, from the point of view of the rolling of a ship there is no such approximate representation. This is because the roll of a ship at any instant is governed by the previous roll behaviour over an interval, which depends on the roll damping, of about 10 wave cycles. The only valid repre-sentation of waves is by a spectrum. For the statistic of wave groups of J. A. Ewing, J. Geophys. Res., 1973.

K. Wieghardt

Report on

International Centre for Heat and Mass Transfer

Institutional Members: National Committee for Heat and Mass Transfer of the USSR Academy of Sciences; Society of Chemical Engineers, Japan ; Indian Na-tional Committee on Heat and Mass Transfer ; Israel Institute of Chemical En-gineers; and, Egyptian Society of Engineers have become Institutional Members of the ICHMT, in addition to the corresponding national professional institu-tions from: Australia; Canada; France; F. R. Germany; Italy; U.K.; Netherlands; U. S. A.; and Yugoslavia. Seminars: The Fifth International Seminar of the ICHMT was held on August 30 to September 6, in Trogir, Yugoslavia, on the topic "Recent Developments in Heat Exchangers", under the Chairmanship of Professor E. U. Schliinder, Karlsruhe. One hundred eighty-four participants from 25 countries attented the Seminar, at which 16 invited lectures and 48 papers were presented. The scien-tific program covered developments in heat exchanger construction and com-ponents; behavior under steady and unsteady regimes; heat transfer in two-phase flow exchangers, regenerators and recuperators; and advanced concepts in heat exchanger design.

l INTERNATION AL UNION OF THEORETICAL .AND .APPLIED MECHANICS 47

P11blications: Proceedings of the 1968 Seminar and selected papers of the 1969 Seminar of the ICHMT were published by Pergamon Press, Ltd., under the title: "Heat and Mau Transfer in Turbulent Boundary Layer.r." Proceedings of the 1970 Seminar of the ICHMT on " Heat and MaSJ T ransfer in Rheologicalty Complex Fluid.!'' and of the 1971 Seminar on "H eat T ransfer in Liquid Metal.r" have also been published by Pergamon Press, Ltd.

Two issues of the Newsletter of the ICHMT appeared in 1972. T he N ews-letter is distributed through a network of correspondents from 28 countries.

The review report on " Modern Re.rearch Laboratories in Heat and Mass Transfer" has been prepared under the contract with UNESCO. The report was edited by Professor E. A. Brun, with the cooperation of Professors T. F. Irvine, Jr. and Z . Zaric. The report will be published by UNESCO in 1973 in French and English.

On the suggestion of the ICHMT, two new journals will appear by the end of 1973 under the sponsorship of the ICHMT: International Heat and Mass Tran.rfer Letters, published by Pergamon Press, and International H eat and Mass Transfer Citation Journal, published by Scripta Publishing Co.

Z. Z aric

48 REPORT 1972

STATUTES Statuts de I'Union lnternatlonale

de Mecanique Theorlque et Appliquee PRI!AMBULE

Afin de contribuer plus efficacement au developpement de la science de la Mecanique, le Comite International des Congres de Mecanique Appliquee avait decide, lors de sa reunion a Paris en septembre 1946, de fonder une organisation permanente portant le nom d' «Union Internationale de Mecanique Theorique et Appliquee».

Cette Union a ete admise dans le Conseil International des Unions Scienti-fiques par decision du Comite Executif de ce Conseil en 1947.

Dans les reunions tenues a Londres en septembre 1948, il a ete decide que le Comite International continuera, en tant que corps independant de !'Union, a organiser, comme par le passe, les Congres Internationaux de Mecanique Appliquee et que ce Comite aura le Statut d'une organisation adherente a !'Union.

Lors des reunions de Munich en aout-septembre 1964, il a ete decide que le Comite International pour les Congres de Mecanique Appliquee serait dis-sous comme un organisme distinct et possedant le statut d'organisation adherant a !'Union, et qu'il serait remplace par un Comite permanent pour les Congres lnternationaux comme un organisme permanent et integre dans !'organisation de !'Union sous le nom de « Comite pour les Congres lnternationaux».l

I L'Union Internationale de Mecanique Theorique et Appliquee a pour buts:

a) De former un lien entre des personnes et des organisations nationales ou internationales s'occupant de recherches scientifiques (theoriques ou experi-mentales) dans le domaine de la mecanique ou des sciences connexes.

b) D' organiser les Congres Internationaux de Mecanique Theorique et Ap-pliquee par l'intermediaire du Comite permanent des Congres et d'organiser

1 Modification approuvee par l'Assembtee Generate du 2 septembre 1964 a Munich et devenue effective a partir du 4 septembre 1964.


d'autres reunions internationales sur des sujets du domaine de Ia mecanique theorique et appliquee. 1

c) De prendre toutes autres initiatives propres a contribuer au developpement scientifique de la mecanique theorique ou appliquee.

II L'organe actif de !'Union Internationale de Mecanique Theorique et Ap-pliquee est son Assemblee Generale. L' Assemblee Generale a pouvoir de decision pour toutes les questions con-

cernant !'Union, y compris la modification des statuts. Elle peut deleguer ce pouvoir pour des sujets specifies a des organes appropries.

La composition de 1' Assemblee Generale est reglee par 1' article IV.

II A2 a) L' Assemblee Generale etablit un Comite permanent des Congres qui

est responsable pour 1' organisation des Congres internationaux de mecanique theorique et appliquee a intervalles reguliers.

b) Le president de !'Union est aussi president du Comite des Congres. Les membres du Comite des Congres sont nommes par 1' Assemblee Generale en tant que personnalites scientifiques activement engagees dans la mecanique theorique et appliquee sant necessairement membres de 1' Assemblee Gene-rale.

c) Le Comite des Congres nomme un Secretaire, sans duree definie de fonction.

d) Les regles de fonctionnement du Comite des Congres doivent etre ap-prouvees par 1' Assemblee Generale.

III Des organisations s'occupant d'etudes scientifiques dans le domaine de la

mecanique theorique ou appliquee (ou des unions nationales de telles organi-sations) peuvent etre admises par 1' Assemblee Generale comme organisations adherentes de !'Union Internationale.

Chaque organisation adherente aura des representants a I' Assemblee Gene-rale de !'Union et paiera une souscription annuelle a !'Union, d'apres les indi-cations de I' article IX.

1 Modification approuvee par l'Assembtee Generate du 2 septembre 1964 a Munich et devenue effective a partir du 4 septembre 1964.

2 Addition approuvee par l'Assemb!Ce Generate du 2 septembre 1964 a Munich et devenue effective a partir du 4 septembre 1964.

50 REPORT 1972

III A L

Des organisations internationales principalement actives dans des domaines scientifiques etroitement lies a ceux de l'Union peuvent etre admises par l' As-semblee Generate en qualite d'organisations affiliees a IUTAM.

Chaque organisation aff iliee est autorisee a deleguer a l' Assemblee Gene-rate un observateur, lequel est admis a prendre part sans voix deliberative aux reunions de l'Assemblee.

L'organisation affiliee s'oblige a tenir le BUREAU de IUTAM (cf. section VII) informe de toutes ses activites importantes et des mesures de portee inter-nationale qu'elle adopte. L'organisation affiliee admet dans la composition de son conseil scientifique ou de l'organe qui en tient lieu un representant de !'Union Internationale designe par celle-ci.

En vue de coordonner les activites scientifiques internationales chaque organisation affiliee s'oblige, lorsqu'elle considere dans sons domaine !'organi-sation d'une telle reunion, a prendre en soigneuse consideration les projets et decisions deja formes en ce qui touche au meme domaine par l'Union Inter-nationale et ses autres organisations affiliees.

Les organisations affiliees ne versent aucune cotisation annuelle a !'Union Internationale.

IV L'Assemblee Generate de l'Union Internationale de Mecanique Theorique

et Appliquee est formee par: a) Les representants des organisations adherentes a !'Union. b) Les membres elus par l' Assemblee Generate de l'U nion, qui doivent etre

des personnes s'occupant effectivement de recherches scientifiques dans le domaine de Ia mecanique ou des sciences connexes.

c) Si 1' Assemblee Generale en decide ainsi, des representants de Commissions de !'Union. 2 Le nombre des membres elus de l' Assemblee Generate appartenant a une

meme nationalite ne devra pas, en general, depasser cinq. Des exceptions pour-root etre faites seulement par decision de 1' Assemblee General e.

La duree du mandat de chaque membre elu sera fixee par 1' Assemblee Gene-rate au moment de son election.

L' Assemblee Generate veillera a ce que soient representes de appro-price les pays dans lesquels soot effectuees des recherches importantes de meca-nique theorique ou appliquee, mais dans lesquels n'existe pas encore d'organi-sation nationale.

1 Addition approuvee par l'Assemblee Generale du 27 aout 1970 a Liege. 2 L'Assemblee Generale du 2 septembre 1964 a Munich a decide d'admettrc comme Membre de l'Assemblee Generale un Representant du Comite des Congres de IUTAM (voir article II A).


v Dans le cas ou il est necessaire d'effectuer un vote, chaque membre de l' As-

semblee Generale dispose d'une voix. Tout membre empeche d'assister a une reunion peut, par lettre adressee au Secretaire de !'Union, constituer comme son mandataire un autre membre de 1' Assemblee Generale.

Les decisions ordinaires et les elections soot faites a Ja majorite des votes exprimes. Pour toute modification des statuts, Ia majorite doit etre les ¥3 des voix.

Dans l'intervalle entre les reunions de l'Assemblee Generale, le vote peut avoir lieu par correspondance sur propositions faites par le Bureau (article VII); dans ce cas, une decision ne sera valable que si le nombre des personnes participant au vote est au moins les ¥3 du nombre total des membres de 1' As-semblee Generate.

VI Les reunions de l'Assemblee Generale auront lieu aux moments fixes par

le Bureau ou sur demande de dix membres au moins de 1' Assemblee General e.

VII Afin de maintenir son activite dans l'intervalle entre les reunions de l'As-

semblee Generate, celle-ci nomme un Bureau compose: d 'un president, du president sortant, vice-president, d'un secretaire, d'un tresorier, et de quatre autres membres de 1' Assemblee Generale. Les membres du Bureau soot elus pour une periode de quatre ans au maxi-

mum et sont reeligibles. Les membres nouvellement elus entrent en fonction le 1 er novembre qui suit 1' Assemblee Generale qui les a elus.

Le Bureau doit se reunir au moins une fois par an. Tout membre du Bu-reau peut, en prevenant par lettre le secretaire, se faire remplacer par un autre membre de l'Assemblee Generate, s'illui est impossible de prendre part a une reunion.

Le role du secretaire est d'assurer les liaisons permanentes pour tout sujet interessant !'Union, y compris les relations avec les organisations adherentes ou etrangeres a !'Union.

Le siege legal de !'Union est Ia residence du sew§taire. Le Bureau est autorise a nommer des tresoriers adjoints dans les pays ou

!'Union a un compte en banque. Les tresoriers ad joints doivent etre membres de l' Assemblee Generate, mais

ne soot pas necessairement membres du bureau.

52 REPORT 1972

VIII Les moyens financiers de l'Union proviennent:

a) des souscriptions annuelles des organisations adherentes; b) des dons ou subventions.

L'Union etablit chaque annee une liste de bienfaiteurs, dans laquelle soot inscrits les noms des personnes ou des institutions qui ont accorde des dons, des legs ou autres subvention a !'Union. , ..

Le Bureau de !'Union etablit un budget pour chaque annee et admmtstre les finances. II doit soumettre un rapport financier annuel aux membres de 1' Assemblee General e.

IX Le nombre de representants d'une organisation adherente et le montant de

la souscription annuelle a payer par cette organisation seront regles d'apres le bareme suivant sur proposition de l'organisation adherente et apres approbation de l'Assemblee Generale de !'Union.

Nombrede Unites de Categorie representants souscription annuelle 1

I 1 1

II 2 3 III 3 5 IV 4 8 v 5 12

Le montant d'une unite de souscription annuelle sera de $ 1001 USA, ou son equivalent en monnaie du pays a la date du paiement.

X Dans toutes ses decisions, I' Assemblee Generale s' inspirera de Ia tradition

de cooperation scientifique libre et internationale qui s'est developpee dans les Congres Internationaux de Mecanique appliquee.

XI Le present texte franc;ais fera autorite pour l'interpretation a donner aux

statuts.

1 Modification apportee a Ia suite du vote de I'Assemblee Generale de Herrenalb (l'Allemagne), 12 septembre 1969.

INTERNATIONAL UNION OF THEORETICAL AND .APPLIED MECHANICS

Resolution de I' Assemblee Generale de Pallanza (27 juin 1950)

53

En confirmation des opinions exprimees precedemment a I' Assemblee Gene-rale de septembre 1948 au moment ou les presents statuts ont ete adoptes:

1. L' Assemblee Generale estime que, dans les pays ou il existe plus d 'une organisation nationale active dans le champ de la mecanique theorique et ap-pliquee, un comite special de coordination doit etre forme. En general, il est convenu de reconnaitre seulement une organisation adherente dans chaque pays.

2. L' Assemblee Generale estime que sa composition devra etre graduelle-ment modifiee de far;on ace qu'elle comprenne principalement les representants des organisations adherentes a !'Union, la categorie des membres elus devant etre reservee pour des cas particuliers et exceptionnels. Dans ce but, elle donne avis de son intention de reduire le nombre des membres elus lorsque, en 1952, ils serront arrives au terme de leur mandat.

Regles de fonctionnement 1 du Comite des Congres de IUTAM (4 septembre 1964)

1. Le Comite des Congres se reunit au moins une fois lors de chaque Congres.

2. Le Comite des Congres peut instituer un Comite Executif charge d'entre-prendre toutes les actions necessaires de sa part pendant la periode qui s'ecoule entre deux Congres successifs, et de lui faire un rapport a sa prochaine reunion. Le Comite Executif comprendra le president et le secretaire du Comite des Congres et un ou plusieurs membres designes par le Comite des Congres.

3. L'organisation effective d'un Congres est confiee a un Comite local d'Organisation, elu par le pays ou !'organisation qui invite, et ce Comite est egalement responsable de la publication des Comptes Rendus du Congrh Le Comite d'Organisation fera son rapport au Comite des Congres soit au cours du Congres qu'il organise, soit avant, s'ille juge preferable.

4. Le Comite d'Organisation devra obtenir !'approbation du Comite des Congres (normalement par l'intermediaire du Comite Executif) pour toutes les affaires qui se rapportent a la politique generale du Comite des Congres, en particulier pour celles qui concernent:

1 Regles approuvees par l'Assemblee Generale du 2 septembre 1964 a Munich et devenues effectives a partir du 4 septembre 1964.

54 REPORT 1972

4. 1 le but du Congres; 4. 2 la selection des communications pour le Congres; 4.3 le choix des lectures generales pour le Congres; 4.4 b designation des presidents de sessions du Congres.

5. Le Comite d 'Organisation percevra, au nom de l'Union Internationale de Theorique et Appliquee, de tous les membres du Congres une

contribution supplementaire ne devant pas depasser $ 1 pour couvrir les de-penses n.dministratives, en plus de la contribution pour le Congres lui-meme. Les contributions supplementaires seront reversees a IUT AM immediatement apres le Congres.

Statutes of the International Union of Theoretical and Applied Mechanics

PREAMBLE In order to be more fully equipped to promote development of the science

of the International Committee for the Congresses of Applied Mechanics at its meeting at Paris in September 1946 decided to found a permanent organization, called "The Intern:ttional Union of Theoretical and Applied Mechanics' ·.

This Union has been admitted into the International Council of Scientific Unions by decision of the Executive Committee of this Council in 1947.

At the meetings at London in September 1948 is was decided that the International Committee would contit:ue to organize the Congresses of Applied Mechanics as an independent body as in the past, and that the International Committee would have the status of adhering organization of the Union.

At the meetings at Munich in August-September 1964 it Vias decided that the International Committee for the Congresses of Appl!ecl .Mechanics would be dissolved as an independent body with the status of an adhering organization of the Union, and that it would be replaced by a standing Committee for Inter-m.tional Congresses as an integral part of the organization of the Union. 1

I The objects of the International Union of Theoretical and Applied Me-

chanics are: a) To form a link between persons and national or international organizations

engaged in scientific work (theoretical or experimental) in mechanics or in related sciences;

b) To organize international of theoretical and applied mechanics through a standing Congress Committee, and to organize other international


meetings for subjects falling within the field of theoretical and applied mechanics 1;

c) To engage in other activities meant to promote development of mechanics, both theoretical and applied, as a branch of science.

II The active organ of the International Union of Theoretical and Applied

Mechanics is its General Assembly. The General Assembly has power to decide all questions affecting the

Union, including alteration of the statutes. On a specified question it may delegate this power to appropriate bodies.

The composition of the General Assembly is regulated in Article IV.

II A 1

a) The General Assembly establishes a standing Congress Committee which is responsible for the organization of international congresses of theoretical and applied mechanics at regular intervals.

b) The president of the Union shall also serve as president of the Congress Committee. The members of the Congress Committee are appointed by the General Assembly as scientists active in theoretical and applied mechanics who need not be members of the General Assembly.

c) The Congress Committee appoints a secretary, without stated terms of office.

d) The rules of procedure of the Congress Committee shall be approved by the General Assembly.

III Organizations occupied in scientific work in theoretical or applied mechanics

(or national unions of such organizations) can be admitted by the General Assembly as adhering organizations of the International Union.

Each adhering organization shall have representatives in the General Assembly of the International Union, and pay an annual subscription to the Union in accordance with Article IX.

1 Modification approved by the General Assembly of September 2, 1964 in Munich and become effective from September 4, 1964.

56 REPORT 1972

III A 1

International organizations mainly occupied in scientific work in fields closely related to that of the Union can be admitted by the General Assembly as affiliated organizations of the International Union.

Each affiliated organization has the right to appoint an observer, who is invited to take part in the General Assembly without voting rights.

The affiliated organization is obliged to keep the Bureau (section VII) of the International Union informed about all important activities of and organi-zational measures taken by it. The affiliated organization will incorporate a representative appointed by the Bureau of the International Union in its scien-tific council or the corresponding organ.

In organizing international scientific meetings of its own the affiliated organization is obliged to consider carefully all measures already taken by the International Union and its other affiliated organizations in order to coordinate such international scientific activities.

Affiliated organizations pay no annual dues to the International Union.

IV The General Assembly of the International Union of Theoretical and Ap-

plied Mechanics is composed of: a) Representatives of the organizations adhering to the Union; b) Members elected by the General Assembly of the Union, who shall be

persons actually engaged in scientific work in mechanics or in related soences;

c) If so decided by the General Assembly, representatives of Committees. 2 The number of elected members of the General Assembly of the same

nationality in general should not exceed five. Exceptions can be made only by decision of the General Assembly. The term of each elected member shall be determinated by the General Assembly at the time of this election.

The General Assembly shall provide for adequate representation of countries where important research is carried out in theoretical or applied mechanics, but where a national organization does not yet exist.

1 Addition approved by the General Assembly of August 27, 1970 in Liege. 2 The General Assembly of September 2, 1964 in Munich has decided to admit as Member

of the General Assembly a representative of the standing Congress Committee of IUTAM (see article II A).


v When voting is necessary every member of the General Assembly shall

dispose of one vote. Any member who may be unable to attend a meeting may by a letter to the secretary constitute another member of the General Assembly as his proxy.

For ordinary decisions and for elections a simple majority of the votes brought forward is required. For an alteration of the statutes the majority required is 7'3 of the votes brought forward.

Between meetings of the General Assembly voting may be carried out by correspondence upon proposals made by the Bureau (section VII); in this case decisions will be valid only provided the number of persons taking part in the vote is not less than ¥3 of the total membership of the General Assembly.

VI Meetings of the General Assembly will take place at times decided by the

Bureau or on request of at least 10 members of the General Assembly.

VII In order to carry out work between the meetings of the General Assembly,

the latter appoints a Bureau, consisting of: A president, The retiring president, who shall serve as vice-president, A secretary, A treasurer, And four other members of the General Assembly. The members of the Bureau will be elected for a period of at most 4 years

and will be eligible for re-election. Newly elected members of the Bureau enter into office on the date of November 1st, following the General Assembly at which they have been elected.

The Bureau will meet at least every year. A member of the Bureau who is prevented from attending a meeting may by a letter to the secretary designate another member of the General Assembly to replace him.

The function of the secretary will be to act as a permanent center for matters affecting the Union, including relations with adhering or outside organizations.

The legal domicile of the Union shall be the place where the secretary lives. The Bureau is authorized to appoint assistant-treasurers in those countries

where the Union has a bank account. The assistant-treasurers must be members of the General Assembly but need

not to be members of the Bureau.

58 REPORT 1972

Vlll T he financial means of the Union are formed by:

a) the annual subscriptions of the adhering organizations; b) gifts and grants.

The Union shall maintain a roll of benefactors on which shall be inscribed annually the names of those persons or institutions wh ich have accorded gifts, legacies or other subventions to the Union.

T he Bureau of the U nion shall draf t a budget for each coming year, and shall administrate the finances. The Bureau shall submit an annual financial report to the members of the General Assembly.

IX The number of representatives of an adhering organization and the amount

of the annual subscription to be paid by that organization will be regulated according to one of the following categories, as proposed by the adhering organization and after approval of the General Assembly of the Union:

Number of Units of Category representatives annual subscription 1

1 1 1 II 2 3

III 3 5 IV 4 8 v 5 12

The amount of the unit annual subscription will be U.S. $ 100 l or its equivalent in local currency at the date of payment.

X In all its decisions the General Assembly shall be guided by the tradition

of f ree international scientific cooperation which has been developed in the International Congresses for Applied Mechanics.

XI The French text of the statutes (of which the above is a translation) shall

be considered to be the authoritative text.

l Modification introduced after the vote of the General Assembly in H errenalb (Germany), September 12th 1969.


Resolution of the General Assembly at Pallanza (June 27, 1950)

In confirmation of the views already expressed at the General Assembly of September 1948 when the present statutes were framed:

1. The General Assembly expects that in those countries where more than one national organization is active in theoretical and applied mechanics, a national coordinating committee will be formed. In general it is expected to recognize only one adhering body in each country;

2. The General Assembly believes that a gradual transition should be made in its composition, so that ultimately it will consist mainly of representat ives of organizations adhering to the Union with the category of elected members reserved for exceptional and unusual cases. To this end it gives notices of its intention to reduce the number of elected members when the terms of the present elected members expire in 1952.

Rules of procedure 1 for the Congress Committee of IUTAM (September 4, 1964)

1. The Congress Committee meets at least once at every Congress.

2. The Congres Committee may appoint an Executive Committee to take all necessary actions on its behalf in the period between two successive Con-g resses, and to report to it at its next meeting. The Executive Committee will consist of the president, the secretary and one or more members appointed by the Congress Committee.

3. The actual organization of a Congress is delegated to a local Organizing Committee, elected by the host-country or host-organization, which is also responsible for publication of its Proceedings. The Organizing Committee will report to the Congress Committee either during or, if it sees fit, before the Congress which it organizes.

4. The Organizing Committee will obtain the approval of the Congress Committee (normally through the Executive Committee) with regard to all matters affecting the general policy of the Congress Committee, in particular with regard to:

4.1 the scope of the Congress; 4.2 the screening of papers for the Congress; 4.3 the selection of general lectures for the Congress ; 4.4 the appointment of chairmen of sessions of the Congress.

1 Rules adopted by the General Assembly of September 2, 1964 in Munich and become effective from September 4, 1964.

60 REPORT 1972

5. The Organizing Committee will levy a fee not exceeding $ 1 on behalf of the International Union of Theoretical and Applied Mechanics, for ad-ministrative expenses, from all Congress members, in addition to the fee re-quired for the Congress itself. The additional fees will be paid over to IUTAM immediately after the Congress.

List of Publications a) Annual Reports.

Report 1948 l Report 1949 Report 1950 Report 1951 Report 1952 Report 1953 Report 1954-1955-1956 Report 1957 Report 1958 Report 1959 Report 1960 Report 1961 Report 1962 Report 1963 Report 1964 Report 1965 Report 1966 Report 1967 Report 1968 Report 1969 Report 1970 Report 1971 Report 1972

b) Publications on Symposia, etc.:

no more available

available at the Secretariat

1. Problems of Cosmical Aerodynamics, Proceedings of the Symposium on the Motion of Gaseous Masses of Cosmical Dimensions held at Paris, France, August 16-19, 1949, organized by IUTAM and IAU. Published by: Central Air Documents Office, Army-Navy-Air-Force, UB Building, Dayton 2, Ohio, USA. Copies can be obtained from the Secretary, U.S. National Committee on Theoretical and Applied Mechanics, Room 1101, 29 West 39the Street, New York 18, N.Y., USA, and from the secretariat of the Intern. Astrono-mical Union '(address: University Observatory, 0ster Voldgade 3, Copen-hagen, Denmark).


2. Colloqtte international de Mecaniq11e, Pallanza, Lago Maggiore, Italia, 23-24 juin 1950, organise par l'IUTAM. Publie par le Consiglio Nazionale delle Ricerche, Roma, Italia, dans "La R.icerca Scientifica", annee 20, n° 12, PP· 1917- 1942, dec 1950.

3. Colloquium on Plastic Flow and Deformation witbin tbe Eartb, Hershey, Pennsylvania, USA, September 12-14, 1950, organized by IUTAM and IUGG. Published by the American Geophysical Union in the "Transactions Amer-ican Geophysical Union", vol. 32, n° 4, pp. 497-543, 1951. A few copies can be obtained from the Secretary, American Geophysical Union, 1530, P. Street, N. W., Washington, D. C. (USA).

4. Colloque mr les Vibrations Non-Lineaires, tenu a l'ile de Porquerolles, Var, France, 18-21 septembre 1951, organise par l'IUTAM et l'URSI. Publications scientifiques, n° 281, Ministere de !'Air, 4, avenue de 1a Porte-d'Issy, Paris XV• (France), 1953.

5. Colloque j\1assau, tenu a Bruxelles, Belgique, les 25-29 avril 1952, organi-se par le Comite Massau, avec le concours de l'IUTAM. Association des Ingenieurs de Gand, rue de la Victoire, Bruxelles.

6. 2nd Symposium on Gas Dynamics of Interstellar Clouds, Cambridge (UK), 1953, in cooperation with IAU. "Gas Dynamics of Cosmic Clouds, edited by H. C. van de Hulst and J. M. Burgers (IAU Symposium series, n° 2) , Amsterdam". Published by North-Holland Publishing Company, Amsterdam (Nether-lands) , 1953.

7. Colloquium on Pbotoelasticity and Pbotoplasticity (Brussels, Belgium, 29-31 July 1954). Published by Imprimerie Dioncre, Chaussee de Boondael, 602-602a, Ixelles-Bruxelles (Belgique).

8. Colloquium on (Stockholm, Sweden, 25- 27 May 1955), organized byiUTAM. Published by Springer-Verlag, Heidelberger Platz 3, Berlin-Wilmersdorf, West Berlin (Germany) , 1956.

9. Colloquium 011 Deformation and Flow of Solids (Madrid, Spain, 26-30 September 1955), organized by IUTAM. Published by Springer-Verlag, Heidelberger Platz 3, Berlin-Wilmersdorf, West Berlin (Germany) , 1956.

10. Tbird Symposium on Cosmical Gas Dynamics (Cambridge, Massachusetts, USA, 24-29 June 1957, in cooperation with IAU). Published by Reviews of Modern Physics, American Institute of Physics, 335 East 45th Street, New York 17, N . Y. (USA), 1958.

62 REPORT 1972

11. Symposium on Boundary Layer Research (Freiburg i. Br., Germany, 26-29 August 1957) . Published by Springer-Verlag, Heidelberger Platz 3, Berlin-Wilmersdorf, W est Berlin (Germany), 1958.

l2.International Symposium on Atmospheric Diffusion and Air Pollution (Oxford, UK, 24-29 August 1958, in cooperation with IUGG). Published by Academic Press, Inc. , 111 Fifth Ave. , New York 3, N. Y.

, (USA), 1959: _13. Symposium 011 Non-Homogeneity in Elasticity and Plasticity (Warsaw, Po-

land; 2- 9 September 1958) , organized by IUTAM. Published by ·Pergamom Press, Ltd., 4 & 5 ·:Fitzroy Square, London W 1 (UK), 1959.

14. Symposium ·on Flrtid Mechanics in the Ionosphere (Ithaca, N. Y., USA, 9-15 July 1959), organized by URSI in cooperation with IUTAM, IUGG and IAU. Published by the American Geophysical Union, 1515 Massachusetts Avenue, N. W., Washington 5, D. C. (USA), in the "Journal of Geophysical Re-search", Vol. 64 (Dec. 1959), pp. 2037-2041.

15: Symp,osimn on the Theory of Thin Elastic Shells (Delft, Netherlands, 24-28 August 1959), organized by IUTAM. Published by the North-Hollanq Publishing Company, N .. Z. Voorburgwal 68, Amsterdam-C. '(Netherlands) , 1960.

16: International Symposium on Magnetohydrodynamics (Washington, D. C. -Williamsburg, Virginia, USA, 17-23 January 1960). Published by Reviews of_ Modern Physics, American Institute of Physics, 335 East 45th Street, New York 17, N.Y. (USA).

17. Colloquimn on Creep in Structures (Stanford, California, USA, 11-15 July 1960).

· Published by Springer-Verlag, Heidelberger Platz 3, Berlin-Wilmersdorf, West Berlin (Germany), 1962.

18. Fourth Symposirtm on Cosmical Gas Dynamics (Varenna, Italy, 18- 30 August 1960, in cooperation with IAU) . Published by the Italian Physical Society, in the "Supplemento del Nuovo Cimento", Vol. 22 n. 1, 1961.

19. International Symposium on Fundamental Problems in Turbrtlence and their Relation with Geophysics (Marseille, France, 4-9 September 1961, in co-

. operation with IUGG). Vol. 67, n° 7A (American Geophysical Union, 1515 Massachusetts Avenue, N. W., Washington 5, D. C., (USA) . Published in the "Journal of Geophysical Research", Vol. 67, N ° 8 (July 1962), pp. 3003-3235.


20. International Symposium. on the Theory of Non-Linear Vibrations {Kiev, USSR, 12-18 September 1961). Published by the Publishing House of Academy of Sciences of the Ukra-inian SSR in Kiev (USSR). .

21. Symfosium on Second Order Effects in Elasticity, Plasticity and. Flurd Dynamrcs (Halfa, Israel, 21-27 April 1962). Published by Pergamon Press, Ltd, Jerusalem Academic Press, Ltd, Israel, 1964.

22. Symposium sur Ia DynamiqtJe des Satellites (Paris, France, 28-30 mai 1962). . Published by Springer-Verlag, Heidelberger Platz 3, Berlin-Wilmersdorf, West Berlin (Germany), 1963.

23. Symposium on Gyrodynamics (Celerina, Switzerland, 2o:-23 August 1962). Publihed by Springer-Verlag, H eidelberger Platz 3, Berlin-Wilmersdorf, West Berlin (Germany), 1963. · ·

24. Symposium Transsonicum (Aachen, Germany, 3-7 September 1962). Published by Springer-Verlag, Heidelberger Platz 3, Berlin-Wilmersdorf, West Berlin (Germany) , 1964.

25. Symposium on Stress Waves in Anelastic Solids (Providence, Rhode Is-lands, USA, 3-5 April 1963). Published by Springer-Verlag, Heidelberger Platz 3, Berlin-Wilmersdorf, West Berlin {Germany), 1964. · .

26. Symposium on A pplications of the Theory of Functions Mechanics (Tbilisi, USSR, 17-23 September 1963). . . Proceedings edited by N. I. Muskhelishvili, L. I. Sedov, and G. K. Mikhai-lov and published under the title "Applications of the Theory of Functions in Continuum Mechanics, Vol. 1 Mechanics of Solids, Vol. 2 Fluid and Gas Mechanics, Mathematical by "Nauka" Publishing House, Moscow (USSR), 1965.

27. Symposium mr Ia Rheologie et Ia Mecaniqrte des Sols (Grenoble France 1-8 avril 1964). ' · ' Published by Springer-Verlag, Heidelberger Platz 3, Berlin-Wilmersdorf, West Berlin (Germany), 1966. ··· · ·

28. Symposium on Concentrated Vortex Motions in Fluids (Ann Arbor, Michi-gan, USA, 6-11 July 1964). · · .·. ·

brief_ account by D. Kiichemann of the problems discussed has been pub-lished m the "Journal of Fluid Mechanics", Veil. 21, part 1, pp. 1-20 (1965). The survey papers have been published in Vol. 7 of "Progress in Aeronautical Sciences", 1966.

64 REPORT 1972

29. Symposium on Recent Advances in Linear Vibration Mechanics (Paris, France, 13-15 April 1965). Published in "Revue de Mecanique" under the title "Recents Pro-gees de la Mechanique des Vibrations Lineaires", N° 13 (1965), pp. 3-58, N ° 14 (1965), pp. 3-70, N° 15 (1965), PP· 3-105.

30.Joint JUT AM 1 IAU 1 COSPAR Symposimn on the Trajectories of Artificial Celestial Bodies as Determined from Observation (Paris, France, 20-30 April 1965). Published by Springer-Verlag, Heidelberger Platz 3, Berlin-Wilmersdorf, West Berlin (Germany), 1966.

31. Vth Joint !AU 1 JUT AM Symposium on Cosmical Gas Dynamics (Nice, France, 2-15 September 1965). Published under the title "Aerodynamic Phenomena in Stellar Atmospheres" (IAU Symposium series, No. 28), editor R. N . Thomas. Academic Press, London and New York, 1967.

32. JUT AM Symposium on Rotatil:g Fluid Systems (La Jolla, California, USA, 28 March-1 April 1966). A Report on this Symposium has been published by F. P. Bretherton, G. F. Carrier, and M. S. Longuet-Higgins under the title "Report on the I.U.T.A.M. symposium on rotating fluid systems" in the "Journal of Fluid Mechanics", Vol. 26, part 2, pp. 393-410 (1966).

33. JUT AM Symposium on Irreversible Aspects of Continuum Mechanics Vienna, Austria, 22-25 June 1966). JUT AM Symposium on the Transfer of Physical Characteristics in Moving Fl11ids (Vienna, Austria, 27-28 June 1966). The Proceedings of both Symposia, edited by H. Parkus and L. I. Sedov, have been published in one volume under the title "Irreversible Aspects of Continuum Mechanics - Transfer of Physical Characteristics in Moving Fluids' by Springer-Verlag, Vienna and New York, 1968.

34.Joint IUGG 1 JUT AM Symposium on Boundary Layers and Turbrdence In-cluding Geophysical Applications (Kyoto, Japan, 19-24 September 1966). The Proceedings of the Symposium, edited by F. K. Bowden, F. N. Fren-kiel, and I. Tani have been published in "The Physics of Fluids, Supple-ment 1967", Vol. 10, 9, Part II, pp. 3-321 (1967).

35. JUT AM Symposi11m on the Generalized Cosserat Contintmm and the Continuum Theory of Dislocations with Applications (Stuttgart and Freu-denstadt, Germany, 28 August-2 September 1967). The Proceedings of the Symposium, edited by E. Kroner, have been published by Springer-Verlag, Berlin 1968.


36. Second JUT AM Symposium on the Theory of Thin Sheils (Copenhagen, Denmark, 5- 9 September 1967). The Proceedings of the Symposium, edited by F. I. Niordson have been published by Springer-Verlag, Berlin 1969.

37. JUT AM Symposium on the Behaviour of Dense M edia under H igh Dynamic Pressures ·(Paris, France, 11-15 September 1967) . The Proceedings of the Symposium, edited by J. Berger, have been published by Dunod, Paris, 1968.

38. JUT AM Symposium on Thermoinelasticity (East Kilbride, Glasgow, UK, 26-28 June, 1968). The Proceedings, edited by B. A. Boley, have been published by Springer-Verlag, Vienna and New York, 1970.

39. JUT AM Symposir1m on High-Speed Computing in Fluid Dynamics (Monterey, Cal., USA, 18-24 August, 1968). The Proceedings, edited by F. N. Frenkiel and Keith Stewartson, have been published in the Journal " The Physics of Fluids", Supplement II, Volume 129, No. 12, Part II (1969).

40. JUT AM Symposi11m on the Flow of Fluid Solid Mixt11res (University of Cambridge, UK, March 24-29, 1969) . An account of the scientific developments reported at this Symposium is published in the "Journal of Fluid Mechanics", (1969) , vol. 39, part 2, pp. 375-405.

41.Joint JUT AM 1 IUPAP Symposi11m on Electrohydrodynamics (MIT, Cambridge, USA, March 31-April 2, 1969). A collection of extended abstracts has been assembled and review article by J. R. Melcher has been published in the "Journal of Fluid Mechanics" (1970) , vol. 40, part 3, pp. 641-655.

42. JUT AM Symposium on Instability of Continnorts Systems (Karlsruhe, Germany, September 8-12, 1969). The Proceedings of the Symposium edited by S. F. J. Broer and H. Leipholz have been published by Springer-Verlag, Berlin 1971.

43. Vlth Joint IAUIIUT AM Symposium on Cosmical Gas Dynamics (Crimean Astrophysical Observatory, USSR, September 8-19, 1969). The Proceedings, edited by Dr. Habing, have been published under the title "Interstellar Gas Dynamics" by D. Reidel Publishing Company Dordrecht -Holland, 1970.

44.Joint COSPAR I IAU I IUGG J IUTAM Symposium on the Dynamics of Satellites (Prague, Czechoslovakia, May 20- 24, 1969). The Proceedings of the Symposium edited by M. B. Morandu have been published by Springer-Verlag, Berlin 1970.

66 REPORT 1972

45. Second JUT AM Symposium on Creep in Stmctures (Gothenburg, Sweden, August 17-21, 1970). . The Proceedings of the Symposium edited by J. Hult have been pubhshed by Springer-Verlag, Berlin, 1972.

46. JUT AM Symposium on High-Speed Comprtting of Elastic Stmctrtres (Liege, Belgium, August 23-28, 1970). The Proceedings of the Symposium edited by B. Fraeijs de Veubeke have been published by Universite Liege, 1971.

47. JUT AM Symposium on Unsteady Bormdary Layers (Quebec, Canada, May 24-28, 1971). The Proceedings of the Symposium edited by E. A. Eichelbrenner have been published by Les Presses de l'Universite Laval, C. P. 2447, Quebec 2, Canada, 1972.

(Please note: The publications listed above, except the Annual Reports, are not available at the IUTAM Secretariat. Please order directly from the publisher.)

c) Proceedings of the International Congresses for Applied Mechanics.

Until September 4, 1964 the organization of the International Congresses for Applied Mechanics was supervised by the "International Committee for the Congresses of Applied Mechanics" and for each Congress separately entrust-ed to a local Organizing Committee also the publication of the Pro-ceedings. Consequently, there is no central point from which can be ordered, and for each volume, application must be made to the pubhshers who took care of that particular volume.

Since September 4, 1964 the same task will be fulfilled by the Standing Congress Committee of JUT AM, and local Organizing Committees to be established.

The titles of the volumes and the names of the publishing firms are given below.

1st Congress, Delft (Netherlands), 22-26 April 1924. . . Proceedings of the First International Congress for Applted Mechamcs, Delft 1924, edited by C. B. Biezeno and J.-M. Burgers (one vol.) . Tech-nische Boekhandel en Drukkerij J. Waltman Jr., Delft, 1925. No more copies are available for sale·at Delft.


2nd Congress, Ziirich (Switzerland), 12- 17 September 1926. Verhandlungen - Comptes rendus - Proceedings of the 2nd International Congress for Applied Mechanics, Zurich, 12-17 September 1926, heraus-gegeben von E. Meissner (one vol.). Orell Fiissli Verlag, Ziirich und Leipzig, 1927.

3rd Congress, Stockholm (Sweden) , 24-29 August 1930. Verhandlungen - Proceedings of the 3rd International Congress for Ap· plied Mechanics - Compte rendus, herausgegeben von A. C. W. Oseen und W . Weibull (3. vol.). AB. Sveriges Litografiska Tryckerier, Stockholm, 1931.

4th Congress, Cambridge (UK), 3-9 July 1934. Proceedings of the Fourth International Congress for Applied Mechanics, Cambridge, UK, July 3rd-9th, 1934 (one vol.). University Press, Cam-bridge (UK) , 1935.

5th Congress, Cambridge (Massachusetts, USA) , 12-16 September 1938. Proceedings of the Fifth International Congress for Applied Mechanics, held at Harvard University and the Massachusetts Institute of Technology, Cambridge, Massachusetts, September 12- 16, 1938, edited by J. P. den Hartog and H. Peters (one vol.). John Wiley and Sons, Inc., New York (USA), and Chapman and Hall Ltd, London (UK), 1939.

6th Congress, Paris (France), 22- 29 September 1946. Proceedings not published (was given in the hands of Gauthier-Villars, Paris) .

7th Congress, London (UK), 5-11 September 1948. Proceedings of the Seventh International Congress for Applied Mechanics, 1948, published by the Organizing Committee (Introduction, Vol. I, Vol. II - Parts 1 and 2, Vol. III, Vol. IV). Copies can be obtained on application from the Secretary of the Congress Committee, Prof. W. T. Koiter, Mekelweg 2, Delft (Netherlands).

8th Congress, Istanbul (Turkey), 20-28 August 1952. Proceedings published by the Organizing Committee (Vol. I, Vol. II). Faculty of Sciences, University of Istanbul, P. 0. Box 245, Istanbul (Tur-key), 1953. Copies can be obtained on application from the Secretary of the Congress Committee, Prof. W. T . Koiter, Mekelweg 2, Delft (Netherlands).

9th Congress, Brussels (Belgium), 5-13 September 1956. Proceedings published by the Organizing Committee '(Vol. I to Vol. VIII). Free University of Brussels, 50, avenue Franklin-Roosevelt, Brussels (Bel· gium) , 1957.

68 REPORT 1972

lOthCongress, Stresa (Italy), 31 August-7 September 1960. . Proceedings published by the Consiglio Nazionale delle Ricerche, Ptazelle delle Science 7, Roma (Italia), printed by Elzevier Publishing Company, Amster-dam -New York, 1962.

11th Congress, Munich (Germany), 30 August-5 September. 1964. . Proceedings edited by H. Gortler and published by Spnnger-Verlag, Het· delberger Platz 3, Berlin-Wilmersdorf, West Berlin (Germany), 1966.

12thCongress, Stanford, Cal. (USA), 26-31 August 1968. The Proceedings, edited by M. Hetenyi and W. G. Vincenti, have been published by Springer-Verlag, Berlin ;(Germany), 1969.

13thCongress, Moscow (USSR), 21-26 August 1972. . The Proceedings, edited by G. K. Mikhailov and E. Becker, wtll be pub-lished by Springer-Verlag, Berlin (Germany).


List of Addresses

Ackeret, Prof. ]. , Eidgenossische Technische Hochschule, Sonneggstrasse 3, 8006 Ziirich, Switzerland.

Albring, Prof. W., Academy of Sciences of the GDR, Otto-Nuschke-Strasse 22/ 23, 108 Berlin, DDR.

de Arantes e Oliveira, Prof. E. R., Lab. Nacional de Engenharia Civil, Av. do Brasil, Lisboa, Portugal.

de Azcarraga, Prof. L., The National Institute of Aerospace Technology "Esteban Terradas", Paseo del Pintor Rosales, 34, Apartado 8346, Madrid - 8, Spain.

Batchelor, Prof. G. K., Dept. of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge, UK.

Becker, Prof. E., Technische Hochschule Darmstadt, 61 Darmstadt, Germany. Berndt, Prof. S., The Royal Institute of Technology, Stockholm 70, Sweden. Bhatnagar, Prof. P. L., Vice-Chancellor, Rajasthan University, Jaipui, India. Bishop, Prof. R. E. D., Dept. of Mechanical Engineering, University College

London, Gower Street, London WC 1, UK. Blackwell, Dr. ]. H., Department of Applied Mathematics, University of

Western Ontario, London, Ontario, Canada. Brankow, Prof. G., Bulgarian Academy of Sciences, ul. "7 noemvri'' 1, BG

Sofia, Bulgaria. Brun, Prof. E. A., 8-10, Place du Commerce, Paris, France. Buckens, Prof. F., Beukenlaan, 3, B-3030 Heverlee, Belgium. Budiansky, Prof. B., Structural Mechanics, Havard University, Cambridge,

Mass. 02139, USA. Burgers, Prof. J. M., Institute for Fluid Dynamics, University of Maryland,

College Park, Maryland 20742, USA. Carafolie, Prof. E., Institut de Mecanique Appliquee, 15. rue Const. Mille,

Bucarest, Rumain. Crandall, Prof. S. H., Department of Mechanical Engineering, Massachusetts

Institute of Technology, Cambridge, Mass. 02139, USA. Dolapchiev, Prof. B., 36 Tzar Krum Str., Sofia, Bulgaria. Drucker, Prof. D. C., College of Engineering, University of Illinois, Urbana,

Ill. 61801, USA. Engelund, Prof. F., The Technical University of Denmark, Inst. of Hydro-

dynamics and Hydraulic Engineering, Building 11 5 B, 2800 Lyngby, Den-mark.

Ferrari, Prof. C., Inst. di Mecc. Appl., Politecnico di Torino, C. 50 Duca Degli Arbruzzi 24, 10129 Torino, Italy.

Fiszdon, Prof. W., Polish Academy of Sciences, Palac Kultury i Nauki, p. 2606, Warszawa, Poland.

70 REPORT 1972

Fraeijs de Veubeke, Prof. B., University of Liege, 75, rue de Val Benoit, Liege, Belgium.

Frenkiel, Dr. F. N., Computation and Mathematics Department, N aval Ship Research and Development Center, Bethesda, Maryland 20034, USA.

Forste, Prof. J., Academy of Sciences of the GDR, Otto-Nuschke-Strasse 22/ 23, 108 Berlin, DDR.

Gauthier, Prof. L., 14, rue du Lycee, Sceaux (92) , France. Germain, Prof. P., 3, Avenue de Champaubert, Paris XVe, France. Glockner, Prof. P. G., Department of Civil Engineering, University of Calgary,

Calgary 44, Alberta, Canada. Goldstein, Prof. S., Pierce Hall, Harvard University, Cambridge Mass. 02138,

USA. Gradowczyk, Dr. M., Comision Nacional de Energia Atomica, Ave del Liber-

tador 8250, Buenos Aires (29) , Argentina. Gortler, Prof. H., 78 Freiburg i Br., Hebelstrasse 40, Germany. Hinze, Prof. J. 0., Lab. Aero-en Hydrodynamica, Technische Hogeschool,

Rotterdamsweg 145, Delft, Netherlands. Hoff, Prof. N . J., Dept. of Aeronautics, Stanford University, Stanford, Cali-

fornia 94305, USA. Hult, Prof. J., Chalmers Tekniska Hogskola, Gibraltargatan 5 M, 40220 Gote-

borg 5, Sweden. Ilyushin, Prof. A. A., Dept. of Mechanics and Mathematics, University of

Moscow, Moscow B-234, USSR. Imai, Prof. I ., Dept. of Physics, University of Tokyo, Hongo, Bunkyo-ku,

Tokyo, Japan. Janssens, Prof. P., !'University Libre de Bruxelles, Bruxelles, Belgium. Jerie, Prof. J. , Komornicka 27, Praha 6, CSSR. Keffer, Dr. J. F., Dept. of Mechanical Engineering, University of Toronto,

Toronto, Ontario, Canada. Koiter, Prof. W . T., Technische Hogeschool Delft, Mekelweg 2, Delft, Nether-

lands. Kozesnik, Prof. J. , Bureau of the President of the Czechoslovak Academy of

Sciences, Narodni tr. 3, Praha 1, CSSR. Ku, Prof. Y. H ., University of Pennsylvania, 200 S 33rd Street, Philadelphia 4,

Penn. 19104, USA. Kuhelj , Prof. A., Institute of Mechanics, Lepi Pot 13, Ljubljana, Yugoslavia. Lee, Prof. E. H ., Dept. of Applied Mechanics, Stanford University, Stanford,

California 94305, USA. Legendre, Dr. R., 17, rue Massenet, Paris XVJe, France. Lighthill, Sir J., Dept. of Applied Mathematics and Theoretical Physics, The

University of Cambridge, Silver Street, Cambridge, UK.


Maunder, Prof. L., University of Newcastle upon Tyne, Stephenson Building, Claremont Road, Newcastle upon Tyne, NE1 7RU, UK.

Mettler, Prof. E., 75 Karlsruhe-Durlach, Geigerbergstrasse 12, Germany. Muskhelishivili, Prof. N. I. , Georgian Academy of Sciences, ul. Dzerjinskii 8,

Tbilisi, USSR. Nikolskii, Prof. A. A., Computing Center of the USSR Academy of Sciences,

ul. Vavilova 28, Moscow B-333, USSR. Niordson, Prof. F. I., Dept. of Solid Mechanics, The Technical University of

Denmark, Building 404, 2800 Lyngby, Denmark. Nowacki, Prof. W., Polish Academy of Sciences, Warszawa, Palac Kultury i

Nauki, Poland. Odqvist, Prof. F. K. G., Torstenssonsvagen 7 D, S-18264 Djursholm, Sweden. Olszak, Prof. W., Int. Centre for Mechanical Sciences, Udine, Palazzo del

Torso, Italy. Osuna, Prof. D. 0 ., The National Institute of Aerospace Technology, Esteban

Terradas, Paseo del Pintor Rosales, 34, Madrid-8, Spain. Owen, Prof. P.R., Imperial College of Science and Technology, Dept. of Aero-

nautic, Prince Consort Road, London SW7, 2BY, UK.

Palm, Prof. E., University of Oslo, Blindern, Oslo 3, Norway. Parkus, Prof. H., Technische Hochschule Wien, Karlplatz 13, A-1040 Wien,

Austria. de Pater, Prof. C., T. H . T. Postbox 217, Enschede, Netherlands. Peste!, Prof. E., 3 Hannover, Borkumer Str. 45, Germany.

Radok, Prof. J. R. M., Australian Academy of Science, Gordon Street, Can-berra City, Australian Capital Terretory, Australia.

Ranta, Prof. Matti A., Helsinki University of Technology, 02150 Otaniemi, Finland.

Reiner, Prof. M., Technion, Haifa, P. 0. 4910, Israel. Rimrott, Dr. F. P. J., University of Toronto, Toronto 5, Ontario, Canada. Rott, Prof . N., Eidgenossische Technische Hochshule, Sonneggstrasse 3, 8006

Zurich, Switzerland. Roy, Prof. M., 55. Boulevard Malesherbes, Paris VIIJe, France. Rubinowicz, Prof. W., Hoza 74/ 4, Warszawa, Poland. Salyi, Prof. 1., Technical University of Miskolc, Miskolc, Hungaria. Schmidt, Prof. G., Academy of Sciences of the GDR, Otto-Nuschke-Strasse

22/ 23, 108 Berlin, DDR. Sedov, Prof. L. 1., University of Moscow, Zone U, app. 84, Moscow B-234,

USSR. Sobrero, Prof. L. , Secretary General of CISM, Udine, Palazzo del Torso, Italy. Sokolovskii, Prof. V. V., Institute of Mechanics of the USSR, Academy of

Sciences, Leningradskii prospekt 7, Moscow A-40, USSR.

72 REPORT 1972

Supino, Prof. Giulio, AIMETA, Inst. di Idraulica, Univ. di Bologna, Viale Risorgimento 2, 40136 Bologna, Italy.

Tani, Prof. I., Dept. of Mechanical Engineering, Nohon University, Kanda-Serugadai, Chiyoda-ku, Tokyo, Japan.

Taylor, Sir G., Farmfield, Huntingdon Road, Cambridge, UK. Temple, Prof. G., 341 Woodstock Rd. , Oxford, England.

Weibull, Prof. W ., Bockamollan, Brosarps Station, Sweden.

Yoshiki, Prof. M., Japan Society for the Promotion of Sciences, 1-1 Kanda-hototsubashi, Chiyoda-ku, Tokyo, Japan.

Ziegler, Prof. H., Weiherweg 6, 8803 Ruschlikon, Switzerland.

REPORT 1972 - IUTAMiutam.org/wp-content/uploads/2016/04/IUTAM_1972.pdf · 24 August 1972 26 Reports...

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Transcript of REPORT 1972 - IUTAMiutam.org/wp-content/uploads/2016/04/IUTAM_1972.pdf · 24 August 1972 26 Reports...