Abstract
Keywords:
Modal Stress Recovery Method, Durability Analysis, Suspension Strut
Abstract
Saving cost and time is the primary reason why CAE is widely used in automobile design. The objective of this research is to define a simulation process similar to actual durability test, which requires a lot of money and time. The front suspension strut module is the main subject of this research and the damper base shell is the subject of durability fatigue test. Moving parts are simulated with using rigid body parts with simplification. The damper base shell part is modeled with flexible body for fatigue analysis based on finite element analysis. The load history, necessary for durability test, is obtained from the actual driving test. Modal stress history is the input data for fatigue analysis that it can be calculated by using Modal Stress Recovery Method. Strain based method is used for fatigue analysis. In order to consider the mean stress effect, Smith-Watson-Topper equation was applied, while Neuber Rule was employed for stress-strain conversations. The weak points at fatigue analysis correspond with break points at actual durability test.