The collapse analysis of the vehicle suspension control arm and fatigue life prediction

Hong-Min Wang1 Feng Xie1 Guo-Feng Zheng1 Xiao-Li Wang1 Wen-Bin Shangguan1 Hong Yu2

Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (20) : 41-46.

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PDF(1534 KB)
Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (20) : 41-46.

The collapse analysis of the vehicle suspension control arm and fatigue life prediction

  • Hong-Min Wang1  Feng Xie1  Guo-Feng Zheng1  Xiao-Li Wang1  Wen-Bin Shangguan1  Hong Yu2
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Abstract

Taking the upper control arm of one vehicle as an objective, the finite element model has been established in this paper. The collapse analysis based on the finite element model under tension and compression condition has been conducted, and the corresponding test has been finished to verify the result of finite element analysis. It is shown that the test and finite element analysis of the collapse to the control arm are basically identical. The stress and strain information of the fatigue hot point has been extracted from the finite element analysis results to establish the damage parameter. The fatigue life prediction by using the damage parameter based on the critical plane approach has been introduced to the control arm, and the fatigue test has been conducted as well. The average life of the test is close to the prediction life indicating that the fatigue life prediction model can be used to the fatigue life prediction of the metal components of vehicle.
 
 

Key words

control arm / finite element / damage parameter ;critical plane approach / fatigue lifeprediction

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Hong-Min Wang1 Feng Xie1 Guo-Feng Zheng1 Xiao-Li Wang1 Wen-Bin Shangguan1 Hong Yu2. The collapse analysis of the vehicle suspension control arm and fatigue life prediction[J]. Journal of Vibration and Shock, 2016, 35(20): 41-46

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