高速铁路车轮摩擦疲劳损伤机理及预防研究

项目名称： 高速铁路车轮摩擦疲劳损伤机理及预防研究

项目编号： No.51475393

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 机械、仪表工业

项目作者： 刘启跃

作者单位： 西南交通大学

项目金额： 84万元

中文摘要： 随着我国高速铁路的快速发展，高速车轮摩擦疲劳损伤变得越来越突出，严重影响我国高速列车的运行安全和高速车轮材料的国产化进程。项目通过系统高速轮轨模拟实验并结合理论建模分析，研究高速车轮磨损与摩擦疲劳损伤行为，揭示高速车轮摩擦疲劳损伤的机理与规律，通过建立车轮磨损-疲劳损伤数值仿真模型并结合实验研究分析高速车轮摩擦疲劳损伤与磨损之间的交互作用关系，研究建立高速车轮摩擦疲劳特性的评价体系和实验方法；研究介质对高速车轮材料摩擦疲劳损伤性能的影响与作用机理，阐明低温环境下高速车轮的摩擦疲劳损伤机制与演变规律，综合分析建立不同运行工况下高速车轮摩擦疲劳损伤图；提出预防与减缓高速车轮摩擦疲劳损伤的有效措施和方法。项目研究成果可为保障我国高速铁路车轮的安全运行、可靠服役及加速高速车轮材料国产化进程提供重要的技术指导和理论支撑。

中文关键词： 高速铁路；摩擦疲劳；损伤；轮轨关系；铁路车轮

英文摘要： With the rapid development of high-speed railway in China, the tribo-fatigue damage of high-speed wheel is becoming more and more serious. So, it has a significant influence on the operation safety of high-speed train and localization process of high-speed wheel material in China. This study focuses on the wear and tribo-fatigue damage behaviors of high-speed wheel by means of systemic simulating experiments of high-speed wheel/rail and theoretical modeling analysis, which is beneficial to reveal tribo-fatigue damage mechanism and evolution law of high-speed wheel. On the basis of experimental investigation, the interaction relationship between tribo-fatigue damage and wear of high-speed wheel is explored and clarified by establishing a numerical simulating model of wheel wear-fatigue damage. The evaluation system and experimental methods for evaluating tribo-fatigue damage characteristic of high-speed wheel will be proposed and established. The effect of friction modifiers on the tribo-fatigue damage behavior of high-speed wheel materials and the mechanism will be studied and explored. The tribo-fatigue damage mechanism and evolution law of high-speed wheel will be clarified under extreme temperature environment conditions. On the basis of research resutls, the tribo-fatigue damage graph of high-speed wheel will be established under different operating conditions. Furthermore,the effective measures will be put forward for preventing and alleviating the tribo-fatigue damage of high-speed wheel. The research results have important technical guidance and theoretical support for ensuring the safety operation and reliable service of high-speed railway wheel and accelerating the localization process of high-speed wheel materials in China.

英文关键词： High-speed railway;Tribo-fatigue;Damage;Wheel/rail relationship;Railway wheel