中文摘要：

钢轨波浪形磨损（简称钢轨波磨）是车辆与轨道结构激烈振动并产生噪声的主要因素之一，不仅影响旅客乘坐舒适度和装运货物的完好，而且缩短结构部件的使用寿命。结合试验，采用车辆一轨道耦合动力学理论、轮轨三维非赫兹滚动接触理论、材料摩擦磨损理论和塑性理论，研究钢轨波浪形磨损的形成和发展机理。主要研究内容如下。

英文摘要：

Rail corrugation is a main factor causing the vibration and noise from the structures of railway vehicles and tracks. Such a situation reduces the comfort of the passengers, causes damage for goods and reduction of the operational life of structural components. Based on the vehicle-track cou pling dynamics theory, non-Hertzian rolling contact theory, rail material model and plasticity theory as well as experiments, the mechanisms of the initiation and development of rail corrugation are analyzed. The main research is as follows. 1） A rail corrugation calculation moael due to wear mechanism is established. In the numerical analysis, Kalker＇s non-Hertzian rolling contact theory is modified and used to calculate the frictional work density on the contact area of the wheel and rail in roiling contact. The material loss of unit area is assumed to be proportional to the frictional work density to determine the wear depth of the contact surfaces of the rails. The combined influences of the corrugation development and the vertical and lateral coupling dynamics of the passenger car and the curved track are taken into consideration. The developed numerical program can consider a feedback process not only between the rail wear and the transient coupling dynamics of one wheel and the curved track, but also between the rail wear and the transient coupling dynamics of four wheels of a same bogie and the track. The effect of rail defects on the formation and development of rail corrugation is investigated in detail. A lot of numerical results are obtained to understand the mechanism of corrugation initiation and development. Under the condition of non-zero steady creepage of wheel/rail, a wheel/rail contact vibration causes rail corrugation formation. The frequencies of the initial rail corrugation are the same as those of the contact vibration, which depends on the track natural frequencies easily excited. The track natural ：frequencies easily excited mainly depend on the extent （or energy） of the interaction