Volume 21 Issue 1
Aug.  2021
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WU Sheng-chuan, REN Xin-yan, KANG Guo-zheng, MA Li-jun, ZHANG Xiao-jun, QIAN Kun-cai, TENG Wan-xiu. Progress and challenge on fatigue resistance assessment of railway vehicle components[J]. Journal of Traffic and Transportation Engineering, 2021, 21(1): 81-114. doi: 10.19818/j.cnki.1671-1637.2021.01.004
Citation: WU Sheng-chuan, REN Xin-yan, KANG Guo-zheng, MA Li-jun, ZHANG Xiao-jun, QIAN Kun-cai, TENG Wan-xiu. Progress and challenge on fatigue resistance assessment of railway vehicle components[J]. Journal of Traffic and Transportation Engineering, 2021, 21(1): 81-114. doi: 10.19818/j.cnki.1671-1637.2021.01.004
shu

Progress and challenge on fatigue resistance assessment of railway vehicle components

doi: 10.19818/j.cnki.1671-1637.2021.01.004
  • 1.

    State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

  • 2.

    CRRC Qingdao Sifang Co., Ltd., Qingdao 266111, Shandong, China

  • 3.

    CRRC Tangshan Co., Ltd., Tangshan 064000, Hebei, China

  • 4.

    CRRC Qishuyan Institute Co., Ltd., Changzhou 213011, Jiangsu, China

  • 5.

    CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130000, Jilin, China

Funds:

Project of Scientific and Technological Research and Development of China Railway P2018J003

Independent Project of State Key Laboratory of Traction Power 2021TPL_T06

National Natural Science Foundation of China U1934214

More Information
  • Author Bio:

    WU Sheng-chuan(1979-), male, professor, PhD, wusc@swjtu.edu.cn

  • Received Date: 2020-09-29
  • Publish Date: 2021-08-27
    Abstract
  • Based on the safety operation and service assessment of vehicle components, the progress on fatigue resistance assessment and engineering application of railway vehicle components mainly including the axles and bogie frame was reviewed. The different design concepts due to axle materials as well as the limitations of difficult quantitative and over-conservative theoretical approaches to the safety assessment of axles (EA4T and S38C) were analyzed. The stepwise fatigue assessment approach to incorporate the nominal stress and damage tolerance was first developed with four key technologies of the improved principle of sample-polymerization, uniaxial tensile based crack growth model, stress-defect-lifetime assessment diagram and reconstruction of surface residual stress. Analysis result shows that the traditional nominal stress based fatigue resistance design leads to conservative lifetime prediction, insufficient or frequent inspection. The accuracy of the novel uniaxial tensile based crack growth model is superior to the NASGRO equation. The Kitagawa-Takahashi diagram combines the nominal stress based fatigue limit with the fracture mechanics based defect geometry, which is more intuitive, quantitative, and comprehensive than the Goodman diagram. The compressive residual stresses of S38C axles are rebuilt by using a unit pressure approach, which is in good agreement with the experimental results. The introduction of compressive residual stresses leads to an improvement in the fretting and fatigue crack growth resistance of Shinkansen axles. Important project are listed including the wide domain environment service, ultra-high cycle fatigue, additive repair and remanufacturing, fracture solution technique, and the combination of dynamics and strength. 45 figs, 201 refs.

     

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