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Reliability and sensitivity of bogie frame of high-speed train with strength degradation

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Abstract

High-speed bogie frame is a key mechanical component in a train system. The reliability analysis of the bogie is necessary to the safety of high-speed train. Reliability analysis of a bogie frame was considered. The equivalent load method was employed to account for random repeated loads in structural reliability analysis. Degradation of material strength was regarded as a Gamma process. The probabilistic perturbation method was, then, employed for response moment computation. Example of a high-speed train bogie structure under time-variant load was employed for reliability and sensitivity analyses. Monte-Carlo simulation verifies the accuracy and efficiency of the proposed method in time-variant reliability analysis. The analysis results show that the reliability calculation considering the strength degradation and repeated load is closer to the practicality than the method of considering reliability calculation only. Its decreasing velocity is faster than the traditional reliability. The reliability sensitivity value changes over time. The analysis results provide a variation trend of reliability and sensitivity to design and usage of bogie frame.

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Authors and Affiliations

  1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang, 110819, China

    Hao Lü  (吕昊), Yi-min Zhang  (张义民) & Xu-fang Zhang  (张旭方)

  2. College of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, 221116, China

    Hao Lu  (卢昊)

Authors
  1. Hao Lü  (吕昊)
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  2. Yi-min Zhang  (张义民)
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  3. Xu-fang Zhang  (张旭方)
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  4. Hao Lu  (卢昊)
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Corresponding author

Correspondence to Yi-min Zhang  (张义民).

Additional information

Foundation item: Projects(51135003, U1234208) supported by the National Natural Science Foundation of China; Project(IRT0816) supported by Program for Changjiang Scholars and Innovative Research Team in University of China; Project(N110603001) supported by the Fundamental Research Funds for the Central Universities of China

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Lü, H., Zhang, Ym., Zhang, Xf. et al. Reliability and sensitivity of bogie frame of high-speed train with strength degradation. J. Cent. South Univ. 20, 3490–3496 (2013). https://doi.org/10.1007/s11771-013-1873-4

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  • DOI: https://doi.org/10.1007/s11771-013-1873-4

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