ASME Technical Elective Forum
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Transcript of ASME Technical Elective Forum
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ASME Technical Elective ForumASME Technical Elective ForumSpring 2007 Technical Elective Courses
Mechanical and Aerospace Engineering Department
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Technical Elective Technical Elective AreasAreas• Thermal SciencesThermal Sciences• AerospaceAerospace• Fluid MechanicsFluid Mechanics• ManufacturingManufacturing• Mechanics and Systems DesignMechanics and Systems Design• Solid MechanicsSolid Mechanics
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Thermal Sciences Thermal Sciences ME 333: Internal Combustion Engines
ME 371: Environmental Control
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Thermal SciencesThermal SciencesME 333: Internal Combustion EnginesDr. J. DrallmeierDr. J. Drallmeier A course dealing primarily with spark ignition and
compression ignition engines. Topics include: thermodynamics, air and fuel metering, emissions and their control, performance, fuels, and matching engine and load. Significant lecture material drawn from current publications.
Prerequisite: ME 221
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Thermal SciencesThermal SciencesME 371: Environmental ControlDr. H. SauerDr. H. Sauer
Theory and applications of principles of heating, ventilating and air conditioning equipment and systems; design problems. Physiological and psychological factors relating to environmental control.
Prerequisites: ME 221 and accompanied or preceded by ME 225
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AerospaceAerospaceAE 314: Spaceflight Mechanics
AE 335: Aerospace Propulsion Systems
AE 382: Spacecraft Design II
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AerospaceAerospaceAE 314: Spaceflight MechanicsDr. H. PernickaDr. H. Pernicka
Topics in orbital mechanics, including: the time equation, Lambert’s problem, patch-conic method, orbital maneuvers, orbit determination, orbit design, and the re-entry problem.
Prerequisites: AE 213
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AerospaceAerospaceAE 335: Aerospace Propulsion SystemsDr. D. RigginsDr. D. Riggins
Study of atmospheric and space propulsion systems with emphasis on topics of particular current interest. Mission analysis in space as it affects the propulsion system. Power generation in space including direct and indirect energy conversion schemes.
Prerequisites: AE 235
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AerospaceAerospaceAE 382: Spacecraft Design IIDr. H. PernickaDr. H. Pernicka
As a continuation of AE 380 from the fall semester, detailed spacecraft subsystem design is performed, leading to procurement of components. As schedules permit, spacecraft fabrication and test commence. Development of labs to facilitate spacecraft test, operation, and data analysis continues.
Prerequisites: AE 235, AE 253, AE 301 (Spacecraft Design I) for AE majors; consent of instructor for non-AE majors.
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Fluids and Fluids and AerodynamicsAerodynamicsME/AE 331: Thermofluid Mechanics IIME/AE 331: Thermofluid Mechanics II
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Fluid MechanicsFluid MechanicsME/AE 331: Thermofluid Mechanics II Thermofluid Mechanics II Dr. D. AlofsDr. D. Alofs
Derivation of Navier-Stokes equations, exact solutions of some simple flows; superposition methods for inviscid flows; intermediate treatment of boundary layer theory, and gas dynamics; introduction to turbulence and kinetic theory.
Prerequisites: ME 231 or AE 231
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ManufacturingManufacturingME 253: Manufacturing ME 256/EMgt 257: Materials Handling and Plant LayoutME/EMgt 344: Interdisciplinary Problems in
Manufacturing Automation ME 353: Computer Numerical Control Of Manufacturing Processes ME 355: Automation in ManufacturingME 356: Design for Manufacture ME 357/EMgt 354: Integrated Product and Process Design ME 358: Integrated Product Development
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ManufacturingManufacturing
ME 253: MANUFACTURING PROCESSES
An elective, 3 credit hour courseAn elective, 3 credit hour course
For Junior/Senior Mechanical and Aerospace For Junior/Senior Mechanical and Aerospace Engineering StudentsEngineering Students
Offered: Every Fall and Winter Semester
Lecture Time: MWF 1:00 – 1:50 PM
Prerequisites: ME153 & BE110
Instructor: Professor Okafor
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ManufacturingManufacturing
ME 253: MANUFACTURING PROCESSES
GradesGrades
3 Tests: T1 = 25%3 Tests: T1 = 25% T2 = 25%T2 = 25% T3 = 35%T3 = 35%
7 Homeworks =15%7 Homeworks =15%Final Grades: based on University PolicyFinal Grades: based on University Policy
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ManufacturingManufacturingINTRODUCTION
• Manufacturing is the process of making useful products from raw materials by various processes, machinery, and operations, following a well organized plan.
• The objective of this course is to teach the important processes, operations, and equipment used to shape engineering materials and the quantitative relationships among material properties and process variables.
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ManufacturingManufacturingINTRODUCTION
• This course deals with advanced analytical study of metal forming and machining processes.
• Metal Forming covers: forging, rolling, direct and
indirect extrusion, wire drawing, deep drawing
• Machining covers: orthogonal and oblique cutting, turning, milling, and drilling, cutting forces, cutting temperature, cutting tool materials, tool wear and tool life, surface finish, and nontraditional machining
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ManufacturingManufacturingMANUFACTURING
Product Development and Design
Marketing Survey and Plan
Cost Estimating
Original ConceptsDesign SketchesWorking DrawingFirst ModelTestingRevised ModelProduction Drawing
MONEY GO AHEAD
From Stock Holders
Men and Women Machine and Tool Material
Production Planning MANUFACTURING Tooling
Casting Welding :Gas, Arc, Resistance
Conventional Machining :Turning, Drilling,Milling, Grinding,Broaching, Boring, etc.
$60 billion/year
Non-Traditional Processes :EDM, ECM, ELG, EBW Forming :
Forging, rolling,Extrusion, Drawing, etc.
Inspection
Product
GOALLESS COST, HIGHER QUALITY, FASTER SHIPMENT
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ManufacturingManufacturingExample: Cast versus formed or machined part
Flanged Pipe
The flanged pipe can be manufactured by the following methods: a) welding, b) casting, c) machining, and d) forming.
Can you give the advantages and disadvantages of each manufacturing process?
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ManufacturingManufacturingAfter Taking This Course
• Your knowledge of manufacturing processes will help you as an engineer to do your work efficiently
• You will be able to design a better product• You will be able to manufacture a better
product• You will help make USA manufacturing more
competitive• You will be able to select the manufacturing
process most suitable based on the functional use of the product
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ManufacturingManufacturingME 256/EMgt 257: Materials Handling and
Plant Layout Dr. C. SayginDr. C. Saygin
The design and objectives of materials handling equipment including diversity of application in industry from the viewpoint of efficient movement of materials and products from the recieving areas to the shipping areas. The layout of a plant to include materials handling equipment is considered throughout. Cost comparison of various systems will be made.
Prerequisites: ME 153 or EMgt 282
website: http://web.umr.edu/~saygin/can/teaching/257/website: http://web.umr.edu/~saygin/can/teaching/257/
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ManufacturingManufacturingME 344: Interdisciplinary Problems in
Manufacturing Automation Dr. C. SayginDr. C. Saygin
The course will cover material necessary to design a product and the fixtures required to manufacture the product. Participants will gain experience with CAD/CAM software while carrying out an actual manufacturing design project.
Prerequisites: ME 253 or approved courses in Ch Eng or EMgt
website: http://web.umr.edu/~saygin/can/teaching/344/website: http://web.umr.edu/~saygin/can/teaching/344/
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ManufacturingManufacturingME 353: COMPUTER NUMERICAL CONTROL
OF MANUFACTURING PROCESSES
An elective, 3 credit hour courseAn elective, 3 credit hour course2 hours lecture and 2 hours lab2 hours lecture and 2 hours lab
For Senior/Graduate Mechanical, Manufacturing, and Aerospace For Senior/Graduate Mechanical, Manufacturing, and Aerospace Engineering StudentsEngineering Students
Offered: Every Fall and Winter Semester
Lecture Time: MW 11:00 – 11:50 AM Labs: W 1:00 – 2:50 PM F 10:00 – 11:50 PM
Prerequisites: ME153 & BE110
Instructor: Professor Okafor
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ManufacturingManufacturingME 353: COMPUTER NUMERICAL CONTROL
OF MANUFACTURING PROCESSES
GradesGrades
2 Tests: T1 = 20%2 Tests: T1 = 20% T2 = 30%T2 = 30%
4 Lab programming projects (milling) &4 Lab programming projects (milling) & 2 Lathe programming Homework = 45%2 Lathe programming Homework = 45%
Project peer evaluation = 5%Project peer evaluation = 5%
Final grades: based on University PolicyFinal grades: based on University Policy
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ManufacturingManufacturingINTRODUCTION
• The objective of this course is to teach students the fundamental concepts, theory and application of computer numerical controlled machine tools from the view point of design principles, machine tool structural elements, control systems, and programming.
• The students will be introduced to the basic components, programming and operation of Bridgeport CNC Milling Machine, and Okuma LB15 CNC Lathe.
• Projects include manual and computer assisted part programming and machining.
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ManufacturingManufacturingWHAT IS NUMERICAL CONTROL?
• Numerical control (NC) is a form of programmable automation in which the processing equipment is controlled by means of numbers, letters and symbols
e.g:N10 G70 G00 X-0.25 Y-0.25 Z0.1 T1 M03 S1000N20 G01 Z-0.25 F4N30 X10.25 F8N40 Y5.25N50 X-0.25 N60 Y-0.25N70 G00 X-1 Y-1 Z0.1N80 M02
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ManufacturingManufacturingWHY NUMERICAL CONTROL?
Cost/component vs Batch Size
low Large batchMedium
Manual Machines
Numerical Control
Transfer Line
Cos
t/com
p one
n t
Batch size
7
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ManufacturingManufacturingPart Complexity
N C Application
Special Purpose Equipment
Conventional Machines
Increasing part complexity
Num
ber o
f par
ts
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ManufacturingManufacturingME 353: BRIEF COURSE OUTLINE
• PART 1: INTRODUCTION/BASIC CONCEPTS• PART 2: MANUAL PART PROGRAMMING• PART 3: COMPUTER ASSISTED PART
PROGRAMMING– EASY CAM: MILLING– IGF: TURNING, APT
• PART 4: EMERGING TECHNOLOGIES– VIRTUAL MANUFACTURING– ON-MACHINE INSPECTION AND
ACCEPTANCE
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ManufacturingManufacturingLAB PROJECTS
• Four Lab projects are assigned at appropriate stages of the course
• Students are advised to work in groups of three or two
• Each group write a separate program, machine the assigned part, and submit one report along with their machined part
• Normally at least one week is allowed for each project from the time it is assigned
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ManufacturingManufacturingAfter Taking This Course
• You will know how to write CNC programs for the Bridgeport CNC milling machine and Okuma LB15 CNC lathe to machine various mechanical parts.
• You will no how to set and operate these machines to machine various mechanical parts using the programs you have written.
• You will also be very familiar in using CAM software (Bridgeport EZ-CAM) and Okuma IGF software for generating cutter paths, CNC codes, and simulating machining processes.
• You will be exposed to emerging technologies like virtual manufacturing and on-machine inspection and acceptance.
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ManufacturingManufacturing
ME 355: Automation in Manufacturing
Dr. Robert G. Landers
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ManufacturingManufacturing
TopicsME 355 – Automation in Manufacturing
Robert G. Landers
Modeling and Simulation
Control Fundamentals
Control System Components
Manufacturing Equipment Modeling
Manufacturing Equipment Control
Logic Control
PLCs and PCs
Case Studies
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ManufacturingManufacturing
Prerequisites: ME 279 or equivalent
Course Materials: Handouts and Matlab
Three In–Class Exams and no Final Exam
Several Assignments
Group Course Project
Course InformationME 355 – Automation in Manufacturing
Robert G. Landers
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ManufacturingManufacturing
Machine Tool LaboratoryME 355 – Automation in Manufacturing
Robert G. Landers
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ManufacturingManufacturing
Laser Metal Deposition LaboratoryME 355 – Automation in Manufacturing
Robert G. Landers
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ManufacturingManufacturing
Friction Stir Welding LaboratoryME 355 – Automation in Manufacturing
Robert G. Landers
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ManufacturingManufacturingFreeze Extrusion Fabrication Laboratory
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ME 355 – Automation in Manufacturing
Robert G. Landers
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ManufacturingManufacturing
Dr. Robert G. Landers
211 Mechanical Engineering Building
Phone: 573–341–4586
Fax: 573–341–6899
Email: [email protected]
Website: http://web.umr.edu/~landersr
Instructor Information
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ME 355 – Automation in Manufacturing
Robert G. Landers
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ManufacturingManufacturingME 356: Design for Manufacture Dr. H. AppelmanDr. H. Appelman
Course covers the approach of concurrent product and process design. Topics includes: principle of DFM, New product design process, process capabilities and limitations, Taguchi method, tolerancing and system design, design for assembly and AI techniques for DFM.
Prerequisites: ME 208 and ME 253
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ME356Design For Manufacturing
• Prerequisites: ME 208 and ME 253• Credit Hours: 3• Place and Time: Thursday 6:30-9:10 pm• Course Website: Blackboard
ManufacturingManufacturing
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Instructor Details
• Howard R. Appelman• Daytime phone: (314) 234-1235• E-Mail: [email protected]
ManufacturingManufacturing
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Text
• Poli, Corrado, Design for Manufacturing: A Structured Approach, Butterworth-Heinemann, Boston MA, 2001
• Author’s Website: http://mielsvr2.ecs.umass.edu/tutors/mainmenu.html
ManufacturingManufacturing
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Grading Policy
• Homework: 30%• Project: 30%• Exams: 40%
ManufacturingManufacturing
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Advantages of Applying DFMA During Product Design
Time to market improvements
39%
Improvements in quality and reliability
22%
Reduction assembly time
13%
Reduction in manufacturing
cycle time17%
Reduction in part counts.costs
9%
ManufacturingManufacturing
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ManufacturingManufacturingME 357/EMgt 354: Integrated Product and
Process DesignDr. V. AlladaDr. V. Allada
Emphasize design policies of concurrent engineering and teamwork, and documenting of design process knowledge. Integration of various product realization activities covering important aspects of a product life cycle such as "customer" needs analysis, concept generation, concept selection, product modeling, process development, DFX strategies, and end-of-product life options.
Prerequisites: ME 253ME 253 or EMgt 282EMgt 282
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ManufacturingManufacturing
EMgt/ME 358 Integrated Product Development
Course Introduction
Frank LiouProfessor, Mechanical
Engineering
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ManufacturingManufacturingCourse Info
• INSTRUCTOR: Dr. Frank Liou – Room: 307 ERL– Tel: 341-4603 – [email protected]
• TEXTBOOK: None.
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ManufacturingManufacturingDescription
• Students in design teams will simulate the industrial concurrent engineering development process.
• Areas covered will be design, manufacturing, assembly, process quality, cost, supply chain management, and product support.
• Students will produce a final engineering product at the end of the project.
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ManufacturingManufacturingPre-requisite
• Mc Eng 253 or • Mc Eng 308 or • Eng Mg 354/Mc Eng 357
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ManufacturingManufacturingFocus
• Working on engineering prototype rather than concept prototype
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ManufacturingManufacturingCourse Structure
• 2-hr lab, 1 hr-lecture • The class will meet twice a week while
lectures will be given every Tuesdays and some Thursdays.
• Thursdays will also be team discussion according to the project schedule.
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ManufacturingManufacturingTopics
• Integrated product development• Purchasing & prototyping • Product assembly and tolerance chain
analysis • Process capability • Product prototyping and evaluation• Design of experiments • Engineering Ethics
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ManufacturingManufacturingPROJECT PROTOTYPES
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ManufacturingManufacturingEDM Prototype
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ManufacturingManufacturingGRADING POLICY
Quiz (final) = 100Homework = 100Project = 300Class attendance and participation =
100 ___________________________________
Total = 600
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Mechanics & System Mechanics & System DesignDesignME/AE 301: Mechatronics ME 304: Compliant Mechanism DesignME 305: Lubrication ME/AE 309: Engineering Acoustics IME/AE 349: Robotic Manipulators and
Mechanisms
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Mechanics & Systems DesignMechanics & Systems Design
ME 301: Mechantronics
Dr. Robert G. Landers
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Mechanics & Systems DesignMechanics & Systems Design
TopicsME 301 – Mechatronics
Robert G. Landers
Sensors and TransducersSignal ConditioningPneumatic and Hydraulic SystemsMechanical Actuation SystemsElectrical Actuation SystemsSystem ModelsSystem Dynamic ResponseSystem Transfer FunctionsClosed–Loop ControllersInput–Output SystemsCase Studies
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Mechanics & Systems DesignMechanics & Systems Design
Prerequisites: ME 279 or equivalent
Course Materials: Textbook and Matlab
Three In–Class Exams and no Final Exam
Several Assignments
Five Mini Laboratory Assignments
Course Project
Course InformationME 301 – Mechatronics
Robert G. Landers
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Mechanics & Systems DesignMechanics & Systems Design
Caterpillar Mechatronics LaboratoryME 301 – Mechatronics
Robert G. Landers
ECM
CylinderSpool Valve
EH Relief Valve
Pump
MotorManifold
Pilot Valve
Accumulator
Joy Stick
Manual Control Valve
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Mechanics & Systems DesignMechanics & Systems Design
Modular Cart–Pendulum SystemME 301 – Mechatronics
Robert G. Landers
Cart Pendulum
Inverted Pendulum
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Mechanics & Systems DesignMechanics & Systems Design
Modular Cart–Pendulum System MoviesME 301 – Mechatronics
Robert G. Landers
Inverted Pendulum Cart Pendulum
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Mechanics & Systems DesignMechanics & Systems Design
Professor Robert G. Landers
211 Mechanical Engineering Building
Phone: 573–341–4586
Fax: 573–341–6899
Email: [email protected]
Website: http://web.umr.edu/~landersr
Instructor InformationME 301 – Mechatronics
Robert G. Landers
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Mechanics & Systems DesignMechanics & Systems DesignME 304
Compliant Mechanisms Design
Course Introduction
By
Ashok MidhaProfessor of Mechanical Engineering
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Mechanics & Systems DesignMechanics & Systems DesignCase StudyCompliant Gripper
Mechanism
• One-Piece Gripper for Near-Parallel Grasp (with possibility to design for constant force)
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Mechanics & Systems DesignMechanics & Systems Design
IntroductionCompliant Mechanisms …• Derive some or all of their mobility from
deflection of flexible members• May involve large motions due to structural
deformations• May be synthesized for prescribed motions,
forces or torques, or energy absorption• May provide reduced cost, weight,
lubrication, lash, shock and noise; and improved ergonomics, assembly, and manufacturability
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Mechanics & Systems DesignMechanics & Systems DesignCase Study
COMPLIERS: COMpliant PLIERS
• Application: A Fish Hook Remover Which Floats; is Light-Weight, Rust-Proof and Ergonomic; and Requires No Assembly
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Mechanics & Systems DesignMechanics & Systems DesignCase Study
AMP Chip Carrier Extractor
• A Compliant Chip Carrier Extracting Device Designed by AMP Incorporated
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Mechanics & Systems DesignMechanics & Systems DesignCase Study
A Compliant Gripping Device
• A Poor Man’s Hand, Operated by a Wire Rope, Tied to the Torso
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Mechanics & Systems DesignMechanics & Systems DesignCourse Objective
ME 304: Compliant Mechanism Design• Review of rigid-body kinematic analysis and
synthesis• Review of linear elastic beam deflections and
stresses• Large-deflection beam modeling and analysis• Pseudo-rigid-body mechanism models• Compliant mechanism design and analysis
methods• Synthesis with force/energy constraints, with
applications• Assimilated knowledge applied to a significant
group project for compliant mechanism design
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Mechanics & Systems DesignMechanics & Systems DesignPrerequisites
ME 304: Compliant Mechanism Design
• Vector and matrix analysis• Planar kinematic analysis of mechanisms• Strength of materials• Linear deformation and stresses in beams• Ability to handle computer project
assignments
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Mechanics & Systems DesignMechanics & Systems DesignME 305: LubricationDr. Brad MillerDr. Brad Miller
Development of basic principles of bearing analysis including manufacture and properties of lubricants, hydrodynamics and hydrostatic lubrication, journal and thrust bearings, ball and roller bearings, boundary considerations, and bearing materials.
Prerequisites: ME 231ME 231
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Mechanics & Systems DesignMechanics & Systems DesignME/AE 309: Engineering Acoustics IDr. EversmanDr. Eversman
Introduction to acoustical theory and measurement with emphasis on mechanical and aerospace engineering applications. Plane and spherical wave propagation, resonators and filters, absorption, room acoustics, human response to noise, noise legislation, noise control. Use of common instrumentation in several projects.
Prerequisites: ME 211ME 211 and ME 213, ME 213, or AE 213 AE 213 and Math Math 204204
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Mechanics & Systems DesignMechanics & Systems DesignME/AE 349: Robotic Manipulators and
MechanismsDr. K. KrishnamurthyDr. K. Krishnamurthy
Overview of industrial application, manipulator systems and geometry. Manipulator kinematics; hand location, velocity and acceleration. Basic formulation of manipulator dynamics and control. Introduction to machine vision. Projects include robot programming, vision-aided inspection and guidance, and system integration.
Prerequisites: Cmp Sc 73Cmp Sc 73 and ME 213ME 213
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Solid MechanicsSolid Mechanics
ME/AE 334: Theory of Stability I
ME/AE 336: Fracture Mechanics I
ME 382/AE 311: Introduction to Composite Materials and Structures
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Solid MechanicsSolid MechanicsME/AE 334: Theory of Stability IDr. V. Birman (Internet only)Dr. V. Birman (Internet only)
Formulation of stability concepts associated with columns, beams, and frames. Applications to some engineering problems utilizing numerical methods.
Prerequisites: BE 110BE 110, Math 204Math 204 and either BE 150BE 150 or ME/AE 160ME/AE 160
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AE/ME 334Stability of Engineering
Structures
Victor Birman ([email protected])Introduction to the Course
Solid MechanicsSolid Mechanics
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The course will prepare the students to design columns, plates, shells and beam-columns. Inelastic buckling, effects of shape imperfections, and large deformations will be reviewed. Numerous application examples will be presented. Design equations and methods used in industry will be discussed.
Solid MechanicsSolid Mechanics
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Intended audience:1. Researchers: Theoretical
foundations of stability problems, their formulation and methods of solution;
2. Engineers: Identifying stability problems, solving “simple problems,” comprehending and interpreting FEA solutions.
Solid MechanicsSolid Mechanics
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Outline of the course:Chapter 1: IntroductionChapter 2: Buckling of bars (columns)Chapter 3: Buckling of platesChapter 4: Buckling of shellsChapter 5: Beam-columns;Chapter 6: Torsional and lateral bucklingProjects: Four large industrial projects (designing structures subject to compressive loads). Students have 3 or 4 weeks to work on each project.
Solid MechanicsSolid Mechanics
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Projects will be defended in person or via e-mail/telephone. The performance of students is judged based on their projects. The projects replace homework assignments and tests.Course materials: Every student will receive a CD RAM disc with the copies of all slides used in the course. The students will also receive copies of relevant printed materials (free of charge).
Solid MechanicsSolid Mechanics
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Solid MechanicsSolid MechanicsME/AE 336: Fracture Mechanics IDr. L. DharaniDr. L. Dharani
Linear elastic and plastic mathematical models for stresses around cracks; concepts of stress intensity; strain energy release rates; correlation of models with experiment; determination of plane stress and plane strain parameters; application to design.
Prerequisites: BE 110BE 110
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AE/ME 336/ME Fracture Mechanics
Lokesh DharaniIntroduction
Solid MechanicsSolid Mechanics
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Course Information & Grading
• Prerequisite: BE/IDE 110 Mechanics of Materials
• Text: “Fracture Mechanics” by T. L. Anderson, CRC Press
• Grading:– 3 in-class, closed-book tests 70%– Assignments & Projects 20%
Follow up course - Fall 2006 ME 436 Advanced Fracture
Mechanics
Solid MechanicsSolid Mechanics
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Could a machine operate safely with cracks?
• All man made structures contain flaws or defects or cracks!
• The question is, could we design structures so that they operate safely in the presence of known or unknown flaws?
• Based on mechanics of materials approach, we cannot.
Solid MechanicsSolid Mechanics
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Mechanics of Materials Approach to Design
• MoM Approach assumes that materials and structures are “defect free”.
• Given two parameters, Applied Stress (loading) & Strength (material property)Applied Stress
YieldStrength
• Design stress ≤ Yield Strengthd = YS
Solid MechanicsSolid Mechanics
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Fracture Mechanics Approach to Design
• Fracture mechanics approach assumes that “all” materials and structures contain inherent “flaws/cracks” so failure occurs well below the static strength.
• Three parameters appear in the fracture mechanics design methodology: Applied Stress (loading), Fracture Toughness (material property) and Flaw size (quality control).
Solid MechanicsSolid Mechanics
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Fracture Mechanics Approach to Design
Applied Stress
Flaw Sizea
Fracture Toughness
KIC
dNDT/NDI
d K ICa
Solid MechanicsSolid Mechanics
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Fracture Mechanics - Objective
• Since we cannot build “defect free” structures, we would like to:
– Calculate safe load for a known defect– Determine safe defect size for a given load – select a material for a design load & defect– Determine “safe operating life” before a defect
grows and results in a catastrophic failure.– Incorporate “damage tolerance” features so as to
prevent catastrophic failures if an unexpected failure does occur
Solid MechanicsSolid Mechanics
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Fracture Mechanics - Objective
•To learn to deal/live with cracks!!!
Solid MechanicsSolid Mechanics
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Solid MechanicsSolid Mechanics
ME 382/AE311Introduction to Composite Materials and Structures
K. Chandrashekhara (KC)
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Solid MechanicsSolid Mechanics
Course Contents
• Fibers and Matrices• Composite Manufacturing• Micromechanics• Orthotropic Lamina• Laminated Composites• Interlaminar Stresses• Failure Analysis• Design of Joints• Experimental Characterization
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Solid MechanicsSolid Mechanics
A combination of two or more materials to form a new material system with enhanced material properties
Reinforcement Matrix Composite+ =
Composite Materials
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Solid MechanicsSolid Mechanics
–High Strength to Weight Ratio–Corrosion & Weather Resistance–Design Flexibility–Extended Service Life –Ease of Assembly–Low Maintenance
Advantages of Composite Materials
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Solid MechanicsSolid Mechanics
–Transportation–Marine–Aerospace and Military–Construction–Electrical / Electronics–Sporting Goods–Medical
Applications
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Solid MechanicsSolid Mechanics
Homework 30%Project 10%Exams (3) 60% Total 100%
Grading Policy
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ASMEASME
That’s it, there is a class in a few minutes so we must clear the room quickly.
Remember, this can be found online at:
www.umr.edu/~asme