Senior Design Fixture AnalysisME 450: Finite Element AnalysisDr. K NemaFinal ProjectJavier AnguloMatt SchonauerAvery Sheets

Overview Introduction Background Model Details Analysis and Results Conclusions

Introduction Analysis will be done on a fixture designed

for ME 462: Capstone Design Project sponsor is Remy, Inc

Out of Anderson, IN The analysis will be purely structural

Von Mises stresses Deflection/Deformation

Background Remy designs and manufactures starters

Background Most analysis of products is done using FEA Testing is usually a “break it” test Tests aren’t universal and standardized No reliable way to compare current products

to competitor products

Background Force transmission path through individual

components

Background The particular fixture being tested will be used to

connect the drive shaft to the torsion machine The pin end will be held by the fixture

Model Details

Model Details

Model Details

Analysis and Results Attempt #1 This method would not

provide any moment at all

There is no implementation in Workbench to apply a pressure on part of a surface

Analysis and Results Attempt #2

Analysis and Results Attempt #3 An okay

approximation, but not quite accurate

Placement of point forces based solely on clicking the mouse

This discrepancy caused forces to be unbalanced

Analysis and Results Results from the last

analysis indicated that the point of high stress was indeed the base of the triangular part

Rounds were added at the intersection of the circular base and the triangular chuck

Analysis and Results Surfaces can be split

into multiple surfaces in Pro Engineer

The force of the torsion machine exerted on the triangular chuck could be better modeled

Analysis and Results Pro Engineer problems

Deleted features still stored in the database Had to create a completely new part

Analysis and Results Maximum torque that can be applied is 1130 Nm

Analysis and Results Maximum von Mises stress is 48.51 MPa Maximum deflection is 0.004 mm (negligible)

Conclusions Design was approved through FEA using a

combination of Pro E and ANSYS Workbench

Good example of the importance of learning the theory behind FEA