• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2025, Vol. 61 ›› Issue (6): 194-205.doi: 10.3901/JME.2025.06.194

• 运载工程 • 上一篇    

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表面缺陷间距及排列对钢轨滚动接触疲劳损伤影响

张沭玥1,2, 王文健1, 林强1, 郭俊1, 刘启跃1, Maksym Spriyagin2, Qing Wu2   

  1. 1. 西南交通大学摩擦学研究所 成都 610031;
    2. 中央昆士兰大学铁路工程中心 洛坎普顿 4701 澳大利亚)
  • 收稿日期:2024-05-12 修回日期:2024-12-25 发布日期:2025-04-14
  • 作者简介:张沭玥,女,1994年出生,博士研究生。主要研究方向为轮轨摩擦学。E-mail:lovingjanezsy@163.com;刘启跃(通信作者),男,1964年出生,博士,教授,博士研究生导师。主要研究方向为轮轨摩擦学。E-mail:liuqy@swjtu.edu.cn
  • 基金资助:
    国家自然科学基金(52320105007,52375205,51975489)和四川省自然科学基金重点(2022NSFSC0036)资助项目。

Effect of Surface Defect Spacing and Alignment on Rail Rolling Contact Fatigue Damage

ZHANG Shuyue1,2, WANG Wenjian1, LIN Qiang1, GUO Jun1, LIU Qiyue1, Maksym Spriyagin2, Qing Wu2   

  1. 1. Tribology Research Institute, Southwest Jiaotong University, Chengdu 610031;
    2. Centre for Railway Engineering, Central Queensland University, Rockhampton, QLD 4701, Australia
  • Received:2024-05-12 Revised:2024-12-25 Published:2025-04-14

摘要: 为研究钢轨表面多个缺陷间的相互影响,通过表面缺陷制备装置在钢轨试样表面预制了圆锥形表面缺陷(深度h≈ 450 μm,夹角θ≈60°且表面圆直径d≈0.6 mm),利用轮轨滚动磨损试验机及ABAQUS有限元仿真软件,研究了表面缺陷间距及排列对钢轨试样滚动接触疲劳损伤及其微观组织演变的影响。研究结果表明,相较于单个缺陷而言,当横向与纵向排列缺陷间距分别小于3.5 mm (6d)和1 mm (1.5d)时,两缺陷在轮轨滚动接触过程中存在相互影响,缺陷需较长时间被磨除,材料损伤区域、接触应力影响区域及残留裂纹深度最高可分别增至单个缺陷的2.5、4.5和1.5倍。当横向与纵向排列缺陷间距分别大于4 mm (6.5d)和1.5 mm (2.5d)时,两缺陷间基本无相互影响。在临界间距内的两缺陷附近材料损伤程度随间距增大而加剧。研究结果对现场服役钢轨维修养护作业具有一定的参考意义。<

关键词: 表面缺陷, 临界间距, 滚动接触疲劳, 微观组织演变, 裂纹深度

Abstract: In order to study the interaction between multiple defects on the rail surface, the surface defect(depth h≈450 μm,intersection angle θ≈60° and the diameter of circular surface d≈0.6 mm) were prepared on the rail sample based on the defect preparation apparatus. Rolling contact fatigue damage and microstructure evolution of rail samples with surface defect clusters in different spacing and alignment were studied using the twin-disc wheel/rail rolling-sliding wear testing machine and the ABAQUS finite element simulation software. The results show that compared with the single defect, once the spacing between two defects aligned transversely and longitudinally was less than 3.5 mm(6d) and 1 mm(1.5d) respectively, the two defects would affect each other during the wheel/rail rolling contact process, and the defects would need a longer time to be removed. The material damage area, the area that influenced by contact stress and the remaining crack depth could be increased to 2.5, 4.5 and 1.5 times of the single defect respectively. Meanwhile, once the spacing between transverse and longitudinal defects was greater than 4 mm(6.5d) and 1.5 mm(2.5d) respectively, there was basically no interaction between the two defects. In addition, damage degree of the material around the two defects within the critical distance increased with the increase in the spacing. Research results have a certain reference significance for the field rail maintenance.

Key words: surface defect, critical spacing, rolling contact fatigue, microstructure evolution, crack depth

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