Volume 58 Issue 24
Dec 2022
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ZHANG Hongwei, GUI Liangjin, FAN Zijie. Fatigue Life Prediction and Experiment of an Axle Housing Considering Welding Residual Stresses[J]. JOURNAL OF MECHANICAL ENGINEERING, 2022, 58(24): 102-110. doi: 10.3901/JME.2022.24.102
Citation: ZHANG Hongwei, GUI Liangjin, FAN Zijie. Fatigue Life Prediction and Experiment of an Axle Housing Considering Welding Residual Stresses[J]. JOURNAL OF MECHANICAL ENGINEERING, 2022, 58(24): 102-110. doi: 10.3901/JME.2022.24.102

Fatigue Life Prediction and Experiment of an Axle Housing Considering Welding Residual Stresses

doi: 10.3901/JME.2022.24.102
  • Received Date: 19 Apr 2022
  • Rev Recd Date: 23 Nov 2022
  • Available Online: 07 Mar 2024
  • Issue Publish Date: 20 Dec 2022
  • As the core component of the driving axle, the fatigue life of the axle housing has a great influence on the safety of the drive axle and the whole vehicle. For the welded axle housing, the effect of the welding residual stress should be considered. The fatigue life prediction model of a commercial vehicle axle housing considering welding residual stress via finite element method is established in this paper, the stress and strain response of the axle housing under the bending fatigue test condition are obtained and the strain-life method is applied to predict the fatigue life of the axle housing. The simulation results are compared with the dynamic strain and fatigue life test results of the bending fatigue test, which verifies the accuracy of the fatigue life prediction model in both the fatigue life and the failure location. Compared with the model without considering the welding residual stress, the fatigue life of the axle housing is reduced due to the welding residual stress, and the failure location is different, which indicates the necessity of considering the welding residual stress in the fatigue life prediction. The method presented in this paper could be applied to the fatigue life prediction of structures with welding residual stress, which could provide guidance for structural optimization design.

     

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