ME 471 - Computer Aided Engineering Analysis and Design

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					                 ME 471 - Computer Aided Engineering Analysis and Design

Catalog Data:                    ME 471: Computer Aided Engineering Analysis and Design. 3(3,0).
                                 Students are exposed to geometric and solid modeling, finite elements,
                                 optimization, and rapid-prototyping. Students design an artifact, represent it on
                                 the computer, analyze it using FEA, then optimize before prototyping it.
                                 Emphasizes the use of computer-based tools for engineering design. The World
                                 Wide Web is used for reporting. Preq: Numerical methods and programming
                                 experience or consent of instructor.

Textbook:                        None

References:                      Computer Aided Design, Dean L. Taylor, Addison Wesley, 1992.
                                 Foundations of Computer Aided Design, Onwubiko, West, 1989
                                 I-DEAS Student Tutorial Guide. SDRC
                                 Pro-E Training Guide, Parametric Technologies
                                 Geometric Modeling, Mortenson, Wiley, 1985
                                 Mathematical Elements for Computer Graphics, Rogers & Adams, McGraw-
                                     Hill, 1990
                                 Computer Graphics & Geometric Models for Engineers, Anand, Wiley, 1993.
                                 Rapid Prototyping and Manufacturing - Fundamentals of Stereolithography,
                                     Jacobs, SME 1992.
                                 The Finite Element Method in Mechanical Design, Knight, PWS Kent, 1993.

Coordinator:                     G. M. Fadel, Associate Professor of Mechanical Engineering

Objectives 1 :
   1. To provide the students with a foundation in computer aided design. [B,C,D,E,F,J]
   2. To produce knowledgeable users of CAD systems. [B,C,D,E,F,J]
   3. To introduce the students to Finite Element Techniques. [B,C,D,E,F,J]
   4. To widen the exposure of the students to contemporary design tools such as optimization and Rapid
        Prototyping. [B,C,D,F,J]
   5. To make the students aware of the capabilities and limitations of computer design tools for
        engineers. [B,C,D,G,J]

Pre/Co-requisites by Topic:
    1. Numerical Methods (root finding, matrix algebra, integration, differentiation). (ME 205)
    2. Machine Design (free body diagrams, stresses, failure criteria, fatigue). (ME 306)
    3. Engineering Graphics (projections, sketches, tolerancing). (EG 209)
    4. Programming experience.

Topical Outline:
   1. The Design Process. (3 hours)
   2. Matrix and Numerical Techniques. (4 hours)
   3. CAD - Wire frame and surface modelers - Surfaces of revolution - Free Form surfaces - Solid
        modeling (B-rep and CSG) – Features. (10 hours)
   4. FEM - 1D, 2D, (3D), Energy methods. (8 hours)
   5. Optimization. (5 hours)
   6. Rapid Prototyping - Processes (Stereolithography, Selective Laser Sintering, CNC etc.) - Software -
        Materials. (4 hours)

1
    Letters in brackets refer to the ME Program Educational Objectives.
      7. Software tutorials. (6 hours)
      8. Tests. (3 hours)

Design Projects:
   In addition to homework, the design project aims at integrating the material taught in class into one
   complete design process. Students are asked to select some artifact to design. They submit a proposal
   describing the artifact they select. Simpler objects to represent will require a more rigorous analysis and
   optimization phase. Students represent the selected artifact on a CAD modeler (IDEAS or Pro-
   Engineer), analyze it or part of it on a finite element program (IDEAS, ANSYS, ABAQUS), apply some
   optimization or guided iteration algorithm to improve the artifact, and then build it or a scale model of it
   on a rapid prototyping or CNC machine. Project reports are turned in on the web.

Computer Usage:
   Students write their own programs. They learn to use a CAD package, a FEM package, optimization
   routines, rapid prototyping software as well as create web pages.

Evaluation Methods:
   1. Homework and projects = 30%
   2. Design projects = 30%
   3. Tests = 20%
   4. Final exam = 20%
   5. Laboratory reports = 0%

Student Learning Outcomes 2 :
    Course Objective 1
    1. Students will implement a design project on a computer. [2]
    Course Objective 2
    1. Students will complete several tutorials on a CAD software to learn its capabilities. [1]
    2. Students will implement solid models using commercial CAD software such as I-DEAS or Pro-
        Engineer. [1,2]
    Course Objective 3
    1. Students will show manipulate stiffness matrices and assemble finite elements. [1,3,4]
    2. Students will complete several tutorials on FEM software to learn its capabilities. [1].
    3. Students will implement solid models using commercial FEM software such as I-DEAS, Ansys, Pro-
        Mechanical or Abaqus. [1,2]
    Course Objective 4
    1. Students will implement optimization or guided iteration algorithms. [1,3]
    2. Students will learn the different rapid prototyping / CNC techniques. [1,3,4]
    3. Students will build their design on an RP or CNC machine. [2]
    Course Objective 5
    1. Students will critique their results and interpret the FEM results. [1,2]

Engineering Topics:

      Engineering Science:       1 credit
      Engineering Design:        2 credits

Prepared by:      G. M. Fadel




2
    Numbers in brackets refer to evaluation methods to assess student performance.