Finite element fatigue analysis of rectangular clutch spring of automatic slack adjuster

Chen-jie Xu; Zai Luo; Xiao-feng Hu; Wen-song Jiang

doi:10.1117/12.2180757

6 March 2015 Finite element fatigue analysis of rectangular clutch spring of automatic slack adjuster

Chen-jie Xu, Zai Luo, Xiao-feng Hu, Wen-song Jiang

Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 94461E (2015) https://doi.org/10.1117/12.2180757
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China

Abstract

The failure of rectangular clutch spring of automatic slack adjuster directly affects the work of automatic slack adjuster. We establish the structural mechanics model of automatic slack adjuster rectangular clutch spring based on its working principle and mechanical structure. In addition, we upload such structural mechanics model to ANSYS Workbench FEA system to predict the fatigue life of rectangular clutch spring. FEA results show that the fatigue life of rectangular clutch spring is 2.0403×105 cycle under the effect of braking loads. In the meantime, fatigue tests of 20 automatic slack adjusters are carried out on the fatigue test bench to verify the conclusion of the structural mechanics model. The experimental results show that the mean fatigue life of rectangular clutch spring is 1.9101×105, which meets the results based on the finite element analysis using ANSYS Workbench FEA system.

Citation Download Citation

Chen-jie Xu, Zai Luo, Xiao-feng Hu, and Wen-song Jiang "Finite element fatigue analysis of rectangular clutch spring of automatic slack adjuster", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 94461E (6 March 2015); https://doi.org/10.1117/12.2180757

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