EML 5532C & EML 4535C – CAD/CAM
SUMMER 2004
Class : Fri 9.00 – 10.50 am ENGR II 105
Lab : Fri 12.00 – 3:50 pm ENGR II 304
Class Web Page: http://www-mae.engr.ucf.edu/eml4535
Instructor:
P.Richard Zarda, Ph.D.
Phone: 407-963-1019 (Cell)
407-356-5715 (Work)
407-833-0031 (Home). No calls after 11pm.
E-mail:
Lab Instructor:
Hari Subramaniam
Office: ENGR II 304
Office Hours: Tue 4.00 pm - 5.00 pm
Fri 11.00 am - 12.00 pm
Phone: 407-823-6666
E-mail:
Catalog Description:
EML 4535C
CAD/CAM/FEM computational technology. Basic concepts. Concurrent engineering approach to mechanical, thermal, and aerospace systems design and analysis. Use of in-house software.
EML5532C
Builds on introductory material covered in EML 4535C. Topics include computer modeling for the synthesis, simulation, design, and manufacture of mechanical thermal, and aerospace systems.
Textbook:
I-DEAS Student Guide by Mark H. Lawry, SDRC, 2003(ISBN 0072525444)
Pre-requisites and Co-requisites:
EGN 3343 (Thermodynamics I), Pre-requisite
EML 3034 (Modeling Methods in Mechanical and Aerospace Engr.), Pre-requisite
EGN 3601 (Solid Mechanics), Pre-requisite
EML 3500 (Machine Design and Analysis – ME Students), Co-requisite
EAS 4200 (Flight Structures – AE Students), Co-requisite
Course Objectives:
Students will study topics fundamental to CAD and CAM hardware and software, geometric modeling, finite element method (FEM), and CAD/CAM/FEM analysis/applications. In-house CAD software (I-DEAS Master Series by SDRC) is an integral part of the course to provide students with hands-on experience.
Assignments:
Homework and projects are due at the beginning of class. Late work will not be accepted unless permission by instructor or lab instructor.
Withdrawal deadline:
The deadline to withdraw from the course without a grade is May 28, 2004.
Grading:
The grade for the course will be earned according to the following distribution of points.
Workshops and Quizzes 10%
Class HW 10%
Mid term project 15%
Mid term exam (cumulative)20%
Final project and Notebook25%
Final exam (cumulative)20%
______
Total 100%
Pledged work:
You may consult with your fellow students if you have difficulties with the software, the computer systems, or the homework problems – in fact, discussion is encouraged. However, direct copying of the homework problems from solutions of any kind will be deemed an honor violation. Each student is expected to fully comply with the Honor Code: NO CHEATING IN ANY WAY OR FORM. If a student is caught cheating, s/he will receive an AUTOMATIC F for the course.
Moreover, if a student sees someone else cheating, s/he should REPORT the incident to the instructor.
Please be aware that timestamps and differences between CAD models can be measured electronically.
General Grading Scheme:
You will be required to do all of the workshops in the I-DEAS Student Manual even though you are not required to turn all of them in for grading. These workshops will teach you the basics of I-DEAS and assist you with your other assignments and your final project. You should also attempt the ‘On Your Own’ assignments since these may help later on.
1. Submitted work should be stapled together, and contain a cover sheet including your name (or the names of the group members), due date, date you turned it in, and the assignment name.
2. Anything that you print from I-DEAS must have your header (or your group’s header) on the page as proof that this is your work and not someone else’s. Your header is simply a listing at the top of the page with your name, the directory you are working in, the date and the file you are working on. You will learn how to get your header once you start working in I-DEAS.
3. All assignments should also be turned in with a brief note explaining what you are handing in. For example, ‘This graph shows the angle of rotation of the pump handle vs. time. The input motion was a sinusoidal wave of amplitude 20 degrees, and a period of 2 seconds.’
4. All graphs must be labeled, so that there is no confusion as to what the graphs show.
Please bear in mind that the shaded view of an object will not print out very well since the printer in the Lab (room 304) only prints in black and grays. If you have access to a color printer, you may print your shaded views (you will not get extra points for this) and wireframe’ views. If you are not able to print in color, then print the ‘wireframe’ views and hidden views. Show your parts in detail in all cases.
Topics to be covered in lecture: (Not listed by week)
1. Overview of CAD & FEM
2. Matrix Algebra
3. Simple Spring
4. Plane Stress & Strain
5. Stress Strain Relationships
6. Energy Concepts
7. FEM Assembly
8. Rod Elements
9. Coordinate Transformations
10. Beam Element
11. Plate Theory
12. Dynamics
13. Normal Modes
Topics to be covered in labs: (Not listed by week)
1. How to log in / log out from I-DEAS. Displaying a header, how to use the mouse, dynamic viewing, dynamic navigation.
2. How to sketch on the work plane, how to sketch in place, extrude, revolve, cut/join/intersect/shell. Move, rotate, align, fillets, chamfers.
3. Constraints.
4. Sweeping, lofting.
5. Rectangular patterns, circular patterns.
6. Data management and libraries.
7. Simple drafting rules, how to make drawings in I-DEAS.
8. Assemblies.
9. Meshing: Free mesh, mapped mesh, manual meshing. Suppressing features, partitioning, local meshing.
10. Boundary Conditions: clamped, rotational, free, symmetry, boundary condition sets.
11. Loads: Point loads, distributed loads, pressure, data surface, and load sets.
12. Model Solution
13. Postprocessor: select results, display results, display template, reaction force files, display group, linear analysis (scaling results).
14. Spring elements used to model joints.
15. Modal analysis: determination of natural frequency, and mode shapes using I-DEAS.