Fatigue life analysis and experimental validation 

of automobile steering knuckle

 

 

YANG Canglu1, ZHU Chuanmin1, LIU Su2, TENG Fei1

 

(1. School of Mechanical and Energy Engineering, Shanghai Tongji University, Shanghai 200120, China;

 

2. Shanghai T&M instrument Company, Shanghai 200030, China)

 

 

Abstract: In order to solve the problems of increasingly auto knuckle fatigue damage, a knuckle finite element model was established through CAE technology. The static strength analysis of auto knuckle was investigated, stress values were obtained by loading and analysis, finite element method was applied to do the fatigue analysis for the design model, and the relatively reliable knuckle forecast life was obtained. Fatigue test devices were used to carry out the fatigue durability test for qualified parts after analysis. Accuracy of finite element model, static strength analysis and fatigue life analysis results were verofied. The experimental results show that it is feasible that finite element analysis method is applied to the auto knuckle fatigue analysis. Research achievements have important guiding significance to improve the auto parts design and development process.

 

Key words: finite element; steering knuckle; fatigue analysis; experimental validation