FEAChQ

download FEAChQ

of 12

Transcript of FEAChQ

  • 8/10/2019 FEAChQ

    1/12

    Ch.1 Questions:

    1. The truss element used in finite element analysis is considered as a two-force memberelement. List and describe the assumptions of a two-force member.

    2. What is the size of the stiffness matrix for a single element? What is the size of theoerall global stiffness matrix in example 1.2?

    !. What is the first thing we should setup when building a new "#$ model in CreoParametric?

    %. &ow does the Creo Parametric Intent Managerassist us in s'etching?

    (. &ow do we remoe the dimensions created by theIntent Manager?

    ). &ow do we modify more than one dimension at a time?

    *. +dentify and describe the following commands,

    a

    b

    Ctrl / 0iddle mouse button

    c

    0iddle mouse button

  • 8/10/2019 FEAChQ

    2/12

    Ch.2 Questions:

    1. $etermine the coordinates of point # if the local coordinate system is rotated 1(

    degrees relatie to the global coordinate system. The global coordinates of point #,

    !(.

    2. $etermine the global coordinates of point 3 if the local coordinate system is rotated

    ! degrees relatie to the global coordinate system. The local coordinates of point 3,!1(.

    Ch.3 Questions:

    4

    i

    4

    u

    #

    !

    (

    4

    i

    v

    4

    u

    3

    ! 1(

    5

    5

  • 8/10/2019 FEAChQ

    3/12

    1. List and describe two of the commands in 06 7xcel to perform matrix operations that

    were used in the tutorial.

    2. What is the difference between the ATAN2function and the ATANfunction in 06

    7xcel.

    !. +n 06 7xcel the trigonometric functionsre8uire the associated angles to be in

    degrees or radians?

    %. &ow do we conert from an angle measurement from radians to degrees?

    (. What are the adantages of performing the direct stiffness matrix method to sole a2$ Truss problem using 06 7xcel ersus using a calculator?

    ). 9sing MS Excel determine the inerse matrix of matrix #,.

    : 2 ! 12 11

    2 % * .2( (

    ! * ! ( )

    12 .2( ( 2 %

    11 ( ) % :

    *. 9sing MS Excel determine the displacements of the following simultaneous

    e8uations,

    25 : 2 ! 12X1

    13.25 2 % * .2( Y118 ! * ! ( X219.25 12 .2( ( 2 Y2

    Ch.4 Questions:

    ;

  • 8/10/2019 FEAChQ

    4/12

    1. $escribe the typical finite element analysis steps.

    2. +n the tutorial how were the nodes and elements created in Creo Simulate?

    !. "an loads be applied to the midpoint of a truss element?

    %. &ow do you identify the ->="7 members in a truss structure?

    (. What are the basic assumptions as defined in 6tatics for truss members?

    ). What does BACSstand for?

    *. &ow is the @-axis of the BACSdetermined?

    :. What is the purpose of a beam release?

    A. &ow do we assign the material properties for truss element in "reo 6imulate?

    1. &ow do we define the cross sections for truss elements in "reo 6imulate? What

    standard cross sections are aailable in "reo 6imulate?

    11. &ow do we determine the @ and B directions of an existing beam element in "reo

    6imulate?

    12. &ow do we determine the applied constraints on an existing system in "reo 6imulate?

    1!. &ow do we obtain the stress alues of truss members in "reo 6imulate?

    1%. What is the type of 7# analysis performed in the tutorial?

  • 8/10/2019 FEAChQ

    5/12

    Ch.5 Questions:

    1. or a truss element in three-dimensional space what is the number of degrees offreedom for the element?

    2. &ow does the number of degrees of freedom affect the size of the stiffness matrix?

    !. &ow do we create !$ points in "reo 6imulate?

    %. +n "reo 6imulate can we import a set of !$ point data that are stored in a regular text

    file?

    (. Will the Creo Simulate7# software calculate the internal forces of the members?

    ). $escribe the procedure in setting up the ector analysis of a !$ truss problem.

    *. 3esides using the ector analysis procedure can we sole the example problem bythe 2$ approach described in "hapter %?

    :. Will "reo 6imulate display the orientation of cross sections of truss elements

    correctly on the screen?

    A. Truss members are also 'nown as two-force member what does that mean?

    1. "an we use seeral different material properties to truss members in a truss system?

  • 8/10/2019 FEAChQ

    6/12

    Ch. 6 Questions:

    1. or a beam elementin three-dimensional space what is the number of degrees offreedom it possesses?

    2. What are the assumptions for the beam element?

    !. What are the differences between Truss ElementandBeam Element?

    %. What are the relationships between the shear diagram and the moment diagram?

    (. or beam elements will the Creo Simulate7# software calculate the reaction forcesat the supports?

    ). "an we apply both a point load and a distributed load to the same beam element?

    *. &ow do we improe the 8uality of the cures shown in the shear and momentdiagrams?

    :. or a 2$ roller support in a beam system how should we set the constraints in "reo

    6imulate?

    A. What are the main differences between a "reo Carametricngineer Template file and a

    regular "reo Carametricngineer part file?

    1. List and describe the general procedure to setup a display iew in "reoCarametricngineer.

    Ch. 7 Questions:

  • 8/10/2019 FEAChQ

    7/12

    1. What are the main differences between the integrated mode and the independent

    mode of "reo 6imulate?

    2. &ow do we account for inclined supports and apply angledloads on indiidual

    elements in Creo Simulate?

    3. $escribe the method ofSuperposition.

    . "an we create additional coordinate systems in "reo 6imulate?

    5. Which command option do we use to display multiple result screens in the =eiew

    =esults window?

    !. Will "reo 6imulate calculate and display the reaction forces that are located at

    inclined supports?

    ". List the standard beam cross section types that are aailable in "reo 6imulate.

    8. +n Creo Simulate list and describe the two options to establish beam elements you

    hae learned so far.

    9. #re the "reo 6imulate analysis results stored inside the "reo Carametricngineer part

    files?

    1#. &ow do we control the speed of animation of the "reo 6imulate analysis results?

    Ch. 8 Questions:

  • 8/10/2019 FEAChQ

    8/12

    1. What are the e8uations of Statics78uations of 78uilibrium?

    2. What is the type of structure where there are more supports than are necessary to

    maintain e8uilibrium?

    !. +n the example problem how did we sole thestaticall$ in%eterminatestructure?

    %. What is the 8uic' 'ey combination to dynamicallyPanthe !$ model in "reo6imulate?

    (. +s there any special procedure in setting up statically indeterminate structures in "reo

    6imulate?

    ). List and describe the differences between a "#$ model and an 7# model.

    *. +n "reo 6imulate what does Idealization mean?

    :. What are the differences in the way the 7# model was created in the tutorial s. theapproach done in the last chapter?

    A. "an the beam cross sections be changed after beam elements hae been created?

    1. What is the percent error of the maximum bending stress obtained by the 7#

    analysis and the preliminary calculation in the tutorial?

    Ch. 9 Questions:

  • 8/10/2019 FEAChQ

    9/12

    1. What are the four basic types of two-dimensional solid elements?

    2. What type of situation is more suitable to perform aPlane Stress anal$sisthan a

    Plane Strain anal$sis?

    !. or plane stress analysis using two-dimensional elements the surface of the mesh

    must be on which plane of a coordinate system?

    %. Which type of two-dimensional solid elements is most suitable for members that are

    thin and whose loads act only in the plane?

    (. Why is it important to recognize the symmetrical nature of design in performing 7#analysis?

    ). List and describe the adantages and disadantages of the C-element method oer the

    &-element method.

    *. Why is it important to not 5ust concentrate on the stress results but also examine thedisplacements of 7# results?

    :. +n the tutorial did the change in the refinement of the C-elements helped the stressresults? 3y how much?

    A. What does the Edge Distribution mesh option allows us to do?

    Ch. 10 Questions:

  • 8/10/2019 FEAChQ

    10/12

    1. What are the most widely used failure criteria?

    2. What are the main ob5ecties of finite element analysis?

    !. What will happen to the system if it is stressed beyond the elastic limit?

    %. What are the necessary elements to create a swept feature in "reo Carametricngineer?

    (. What is the purpose of doing a conergence study?

    ). 9nder what condition does the bending stress deeloped in a cured beam no longer

    linear?

    *. What does the Cutting/Capping Surfsoption allows us to do?

    :. "an a cured beam problem be analyzed with the 1$ beam element? What is themain limitation of performing such an analysis?

    A. What are the adantages of using !$ elements oer using the 1$ or 2$ elements?

    1. What is the purpose of performing a multi-pass adaptie analysis?

    Ch. 11 Questions:

  • 8/10/2019 FEAChQ

    11/12

    1. or designs that are thin and symmetrical about an axis what are the different 7#

    analyses aailable in "reo 6imulate?

    2. What are the adantages and disadantages of performing an axisymmetric analysis

    oer a !$ solid analysis?

    !. To perform an axisymmetric analysis in "reo 6imulate on which plane must the

    surface be created?

    %. +n "reo 6imulate how do you setup the 7# model to be an axisymmetric model?

    (. To perform an axisymmetric analysis in "reo 6imulate which axis is the default axisof symmetry?

    ). To perform an axisymmetric analysis in "reo 6imulate can the surface be created in

    the negatie @ portion of the associated coordinate system?

    *. What are the re8uirements to apply constraints on thin shell models?

    :. &ow do you specify the thic'ness of a thin shell model?

    A. &ow do you display multiple analyses results on the same screen?

    Ch. 12 Questions:

  • 8/10/2019 FEAChQ

    12/12

    1. What is the main purpose of performing a 0odal analysis on a system?

    2. What are the relations between resonant frequencies and the natural frequencies of a

    system?

    !. +n ibration analysis any physical structure can be modeled as a combination of what

    ob5ects?

    %. # cantileer beam can be modeled as a simple mass-spring system by examining the

    deflection at the tip of the beam what is the e8uialent spring constant for such a

    system?

    (. +n performing a 0odal analysis of a cantileer beam would changing the material

    properties affect the natural fre8uencies of the system?

    ). +n "reo 6imulate is it re8uired to hae a load applied to the system in order toperform a 0odal analysis?

    *. +n "reo 6imulate can we perform a 0odal analysis without applying a constraint?

    :. or the cantileer beam with a mass attached at the end when the attached mass is

    relatie big we can ignore the weight of the beam as a simplified approximation."alculate the first natural fre8uency of the tutorial problem using this approximation

    and compare the results obtained.