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车速变化对钢轨磨损影响的数值计算与实验研究
  • 期刊名称:润滑与密封
  • 时间:0
  • 页码:19-24
  • 语言:中文
  • 分类:U211.5[交通运输工程—道路与铁道工程]
  • 作者机构:[1]西南交通大学牵引动力国家重点实验室摩擦学研究所,四川成都610031
  • 相关基金:国家自然科学基金项目(50905148,50875221);国家重点基础研究发展计划项目(973计划,2007CB714702);国家863计划项目(2009AA042424).
  • 相关项目:高速铁路轮轨型面及材料匹配优化研究
中文摘要:

用数值计算方法分析静态接触情况下,轮轨接触质点间蠕滑力、黏滑区的分布随横移量和摇头角变化速率的变化,利用模拟试验研究有制动力作用下车速对钢轨试样磨损特性的影响。结果表明:有制动力影响时钢轨磨损量随车速的增大呈非线性减小,在车速小于160km/h时,钢轨磨损量随车速增加急剧减小,但是当车速超过200km/h之后,磨损量随车速的增大而下降的趋势相对比较平缓;随着摇头角变化速率和横移量变化速率的增大,轮轨接触斑中最大滑动量逐渐减小,滑移区的面积减小,而黏着区的面积增大。

英文摘要:

The creepage forces, stick/slip areas of contact particles of wheel/rail in static condition were analyzed by means of numerical methods. Under the motorization, the effect of speed on rolling wear behavior Of rail was investigated using simulation experiment, the results of numerical analysis and experiment indicate that with the increase of vehicle speed, the wear volume of rail decreases unlinear, especially when the vehicle speed is less than 160 km/h, the rail wear reduces remarkablely with increasing vehicle speed, the rail wear variation becomes flatly and weakly in the condition of speed is more than 200 km/h. With the increasing rate of traverse and yaw angle, the most slippage increases gradually, and the stick areas decrease while the slip areas increase.

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