RESEARCH OF RUBBER FATIGUE OPTIMIZATION UNDER MULTIAXIAL LOADING

Abstract

This paper introduces an analysis method,which combines the crack fatigue prediction theory and rubber elastic structure optimization,to optimize the structure of a rubber bushing. Using stress in rubber as the optimization parameters,the method can predict fatigue life of the rubber bushing by applying crack energy density. In summary,using the fatigue result,this new analysis method can predict rubber fatigue life and provide optimized structure of rubber parts. This combination of the crack fatigue prediction theory and rubber elastic structure optimization ensures the convenience of engineering application and provides a guidance to reduce rubber structure developing time.

Keywords

• Rubber bushing;Multiaxial loading;Crack energy density;Fatigue life;Optimization