• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2023, Vol. 59 ›› Issue (3): 165-175.doi: 10.3901/JME.2023.03.165

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Thermo-mechanical Analysis of Railway Brake Disc with the Consideration of Contact Pressure Distribution and Non-uniform Heat Flux Density

ZHANG Qinghe1, LU Chun1,2, WU Yuanke1, ZHAO Jing1, MO Jiliang1,2   

  1. 1. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031;
    2. Technology and Equipment of Rail Transit Operation and Maintenance Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu 610031
  • Received:2022-02-17 Revised:2022-06-28 Online:2023-02-05 Published:2023-04-23

Abstract: The friction block arrangement has a significant influence on the thermo-mechanical response status of the brake disc. A thermo-mechanical simulation method considering the influence of contact pressure distribution and non-uniform heat flux density is proposed. The experimental test data obtained by the railway vehicle braking performance test bench is used to validate the correctness of the proposed method from the perspective of temperature. After that, the full-size finite element model of the railway disc brake system is established and the existing friction block arrangement is optimized. The results indicate that a reasonable arrangement of friction blocks can significantly reduce the highest temperature and stress, improve the distribution of temperature and stress on the brake disc, and provide good braking performance. This work can provide a fast and effective simulation method for thermo-mechanical analysis of railway disc brake systems and provide guidance for friction block arrangement optimization.

Key words: brake disc, friction block arrangement, contact pressure distribution, thermo-mechanical response, non-uniform heat flux density

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