ENME 414 Computer Aided Design
Homework Assignment 8 - Computer-Aided Engineering
Due 9:30 am, Tuesday, October 29, 1996
Statement: Finite Element Analysis (FEA) has become a powerful design and
analysis tool for many industries. The advent of powerful CAD systems has
made the presentation and interpretation of the analysis results much simpler
for design engineers. By eliminating the burden of analytical complexity
from their designs, engineers are free to concentrate on the function and/or
packaging of the design. In addition, graphical presentation enhances the
conceptual understanding of structural loading and their effects on the
developed stress field. Note that the emphasis of this course is in the
proper usage and interpretation of finite-element methods, rather than
a theoretical development of the technique.
This homework assignment is designed to give you exposure to some of the capabilties of finite element analysis using both PRO/Engineer and the FEM package, ANSYS. PRO/Engineer will be used to create the solid model of the example part and to create a finite element mesh representing the part. Loads and constraints will be placed on the model and the resulting file will be exported to ANSYS. ANSYS will solve the finite element model and the results will be exported back into PRO/Engineer.
Assignment: Create the following part in PRO/Engineer. Produce a 2-D mesh of triangular elements and import this model into ANSYS for solution. Determine the maximum deflection and maximum stress in the beam due to a 10,000 lb load in the negative y direction at the near end of the beam. The far end is constrained against displacement. Compare the solutions given by a coarse and fine mesh. Compare the answers gained by finite element analysis with those determined by traditional mechanics equations.
