Simulation Analysis of Fretting Wear and Fatigue of Press-fitted Structure of Hollow Axle and Solid Axle

doi:10.3901/JME.2022.05.161

Abstract

Abstract: In order to analyse the difference of fretting wear and fatigue behaviour between hollow axle and solid axle press-fitted structure, the fretting wear-fretting fatigue co-simulation model of two kinds of the press-fitted structure was established. The co-simulation model is based on Archard wear equation and ALE adaptive mesh method of ABAQUS, and fretting fatigue life prediction is realized based on linear cumulative damage theory and modified SWT critical plane method. The simulation results showed that the fretting wear of the hollow axle was more serious than that of the solid axle. The stress concentration at the edge of fit decreased significantly by fretting wear. At the same time, a new stress concentration was established inside the fit and caused the cracks initiation position to appear inside the contact surface. As a result of fretting wear, the fretting fatigue life of hollow axle is only about 40% of the solid axle, and the cracks initiation position was almost the same as that of the solid axle.

Key words: fretting wear, fretting fatigue, press-fitted, hollow axle, finite element

CLC Number:

TH117

DONG Yi-hui, LU Lian-tao, LI Xiao-xuan, ZHAO Hai, CHEN Han, CENG Dong-fang. Simulation Analysis of Fretting Wear and Fatigue of Press-fitted Structure of Hollow Axle and Solid Axle[J]. Journal of Mechanical Engineering, 2022, 58(5): 161-169.

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