钢轨短波波磨的产生机理  

Mechanism of Short Wavelength Corrugation of Rail Surface

作　　者：王步康[1] 谢友柏[1] 

机构地区：[1]西安交通大学润滑理论及轴承研究所,陕西西安710049

出　　处：《摩擦学学报》2001年第5期375-378,共4页Tribology

基　　金：国家自然科学基金资助项目 ( 5 9935 10 0 )

摘　　要：通过对轮 -轨系统进行动力学分析 ,指出高频率的能量传播主要集中于轮轨之间 .在对轮 -轨系统进行有限元分析的基础上 ,研究了轨道的受力情况和摩擦系数对应力分布的影响 。The dynamic behavior of a wheel-rail system was investigated. The Melan's (lower bound) shakedown theorem was applied to calculate the shakedown limits. The preliminary research results indicate that the short wavelength corrugation of the rail is due to a large amount of energy delivered from the vibration components at high frequency. The finite element analysis of the wheel-rail contact shows that the maximum stress under the subsurface exceeds the first yield strength, which leads to plastic deformation.

关 键 词：轮轨 波磨 安定极限 磨损 动力学 有限元 弹塑变形 

分 类 号：TH117.1[机械工程—机械设计及理论]