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Twist Fatigue Life Simulation and Correlation with Test for an Automotive Rear Suspension

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2004 Annual Conference


Salt Lake City, Utah

Publication Date

June 20, 2004

Start Date

June 20, 2004

End Date

June 23, 2004



Conference Session

TIME 5: Solid Mechanics

Page Count


Page Numbers

9.1436.1 - 9.1436.9



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Paper Authors

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Gene Liao

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This paper documents the result of twist fatigue life simulation correlated with test for an automotive rear suspension. The simulations were performed on both accelerated and standard twist test under constant amplitude cyclic loading. The accelerated twist test was developed for correlation. The result shows that the analytical fatigue life correlates with the test fatigue life within a factor of 2. However, the experiment shows that a crack appears exactly at the v−reinforcement tips to the weld toes as simulation predicted. It is observed that the welds are an important factor in this simulation and rigid modeling is feasible. This project also serves as a case study to the students in predicting fatigue failure of a real industrial part.

Liao, G. (2004, June), Twist Fatigue Life Simulation and Correlation with Test for an Automotive Rear Suspension Paper presented at 2004 Annual Conference, Salt Lake City, Utah. 10.18260/1-2--25122

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