| 车轮磨耗计算模型及其数值方法 |
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| 引用本文： | 李霞,金学松,胡东.车轮磨耗计算模型及其数值方法[J].机械工程学报,2009,45(9). |
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| 作者姓名： | 李霞 金学松 胡东 |
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| 作者单位： | 1. 西南交通大学牵引动力国家重点实验室,成都,610031
2. 西南交通大学力学与工程学院,成都,610031 |
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| 基金项目： | 国家自然科学基金，高等学校博士学科点专项科研基金，国家重点基础研究发展计划，四川省青年科技基金 |
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| 摘 要： | 综述国内外车轮磨耗理论模型及其数值方法,提出基于车辆轨道垂、横向耦合动力学、轮轨滚动接触力学和材料摩擦磨耗模型为一体的车轮磨损计算模型, 并发展相应的数值方法.模型中车辆结构和钢轨下部结构被简化成等效质量、弹簧和阻尼系统, 而钢轨用Euler 梁代替, 并考虑它的垂向、横向弯曲变形和扭转变形.利用修改的KALKER三维弹性体非Hertz 滚动接触理论和相应的数值方法计算轮轨蠕滑力和滑动量等参量;根据Archard材料磨损模型计算车轮的磨耗深度.利用该模型和相应的数值方法分析不同曲线半径情况下车轮的磨损情况,结果表明该模型可以较好地模拟车轮磨损的演化过程.给出列车通过曲线半径为350 m时车轮的磨损情况.数值结果表明,每个转向架下前轮对比后轮对磨耗严重,外轨上的车轮比内轨上的车轮磨耗严重.
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| 关 键 词： | 车轮磨耗 车辆轨道动力学 轮轨接触 材料磨损 车轮型面 |
Theoretical Model and Numerical Method of Wheel Profile Wear |
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| LI Xia,JIN Xuesong,HU Dong.Theoretical Model and Numerical Method of Wheel Profile Wear[J].Chinese Journal of Mechanical Engineering,2009,45(9). |
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| Authors: | LI Xia JIN Xuesong HU Dong |
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| Affiliation: | 1.State Key Laboratory of Traction Power;Southwest Jiaotong University;Chengdu 610031;2.School of Mechanics and Engineering;Chengdu 610031 |
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| Abstract: | The existing theoretical models and numerical methods of railway wheel wear are reviewed.A model,in which the wheel material wear model,the non-Hertzian rolling contact theory of wheel and rail system and coupling dynamics of rail vehicle and track in the vertical and lateral directions are combined,is developed to predict the wheel profile wear.A passenger car and the structure under the rails are replaced by the systems consisting of dampers,springs and equivalent mass bodies,and the Euler beam is utilize... |
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| Keywords: | Wheel profile wear Vehicle and track dynamics Wheel rail contact Material wear Wheel profile |
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