• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2026, Vol. 62 ›› Issue (14): 160-169.doi: 10.3901/JME.260160

• 材料科学与工程 • 上一篇    下一篇

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高速列车制动盘平行径向多裂纹扩展行为分析

卢纯1,2, 何家欢2, 滕万秀1, 梁红琴2, 温泽峰3, 邓永权4   

  1. 1. 中车长春轨道客车股份有限公司 长春 130062;
    2. 西南交通大学机械工程学院 成都 610031;
    3. 西南交通大学轨道交通运载系统全国重点实验室 成都 610031;
    4. 西南交通大学国有资产与实验室管理处 成都 610031
  • 收稿日期:2025-08-10 修回日期:2026-01-05 发布日期:2026-08-29
  • 作者简介:卢纯,男,1989年出生,博士,副教授。主要研究方向为多轴疲劳可靠性、热机耦合摩擦磨损。E-mail:clu@swjtu.edu.cn;se7en_luchun@163.com;邓永权(通信作者),男,1979年出生,博士,副教授。主要研究方向为载运工具运用工程。E-mail:yongquand@swjtu.edu.cn
  • 基金资助:
    国家自然科学基金(52105160)、四川省自然科学基金(2025ZNSFSC0386,2022NSFSC1877)和中国博士后科学基金(2022M720537)资助项目。

Analysis of Multiple Parallel Radial Crack Propagation Behavior of High-speed Train Brake Discs

LU Chun1,2, HE Jiahuan2, TENG Wanxiu1, LIANG Hongqin2, WEN Zefeng3, DENG Yongquan4   

  1. 1. CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062;
    2. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031;
    3. State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031;
    4. Office of State-owned Assets and Laboratory Management, Southwest Jiaotong University, Chengdu 610031
  • Received:2025-08-10 Revised:2026-01-05 Published:2026-08-29

摘要: 制动盘作为列车基础制动系统的关键核心部件之一,其表面在反复多次制动过程中会产生广布疲劳裂纹,威胁列车行车安全。针对高速列车制动盘表面的多裂纹问题,通过热机耦合有限元仿真和虚拟裂纹闭合技术,研究盘面平行径向多裂纹之间的相互作用规律,并从应力分布、张开位移分布、应力强度因子和裂纹扩展速率等方面分析裂纹间距对制动盘面径向裂纹扩展行为的影响。研究发现,多裂纹的存在会影响裂纹周围的应力场和位移场从而减缓裂纹扩展,但多裂纹的存在不会影响裂纹的张开时刻。随着平行径向多裂纹间距的增大,多裂纹之间的相互影响会减弱。在本计算条件下,当裂纹间距大于20 mm时,多裂纹的存在对主裂纹沿径向的扩展行为影响较小。当裂纹间距大于30 mm时,多裂纹的存在对主裂纹沿深度方向的扩展行为影响较小。当裂纹间距为5 mm时,径向裂纹在前端、底部和后端的扩展速率分别降低58%、81%和54%。

关键词: 制动盘, 裂纹扩展, 虚拟裂纹闭合, 多裂纹, 径向裂纹

Abstract: As one of the key components of the train’s basic braking system, the brake disc may develop widespread fatigue cracks on its surface during repeated braking processes, posing a threat to train safety. The multiple cracks on high-speed train brake discs surface are studied through thermo-mechanical finite element simulation and virtual crack closure technology, and the interaction between multiple parallel radial cracks on the disc surface is studied. The influence of crack spacing on the radial crack propagation behavior of the brake disc surface is analyzed from the aspects of stress distribution, opening displacement distribution, stress intensity factor, and crack propagation rate. Research has found that multiple cracks can slow down crack propagation by affecting the stress and displacement fields around the crack, but they do not affect the opening time of the crack. As the spacing between parallel radial cracks increases, the mutual influence between multiple cracks will weaken. Under the calculation conditions in this article, when the crack spacing is greater than 20 mm, the presence of multiple cracks has a relatively small impact on the radial propagation behavior of the main crack. When the crack spacing is greater than 30 mm, the presence of multiple cracks has little effect on the propagation behavior of the main crack along the depth direction. When the crack spacing is 5 mm, the propagation rates of radial cracks at the front, bottom, and rear ends decrease by 58%, 81%, and 54%, respectively.

Key words: brake disc, crack propagation, virtual crack closure, multiple cracks, radial crack

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