关于铁道车辆车轮踏面微小凹凸和切向力的基础研究

A Foundation Study on Fine Unevenness and Tangent Force on Wheel Tread of Railway Vehicle

影响铁道车辆运行性能的轮/轨间的切向力特性往往是通过实验和分析进行研究的。本文利用模拟车轮旋削痕迹的微小凹凸试样和磨去凹凸后的光滑平坦试样,进行滚动-滑动摩擦力实验,探讨了温度和相对湿度等环境条件下车轮踏面的切向力特性及其对车辆运行稳定性的影响。

The features of wheel/rail tangent forces affecting the operation performance of rolling stock are usually researched through experiments and analysis. The sample with fine unevenness simulating the wheel turning trace and the smooth, even sample with fine unevenness being ground off are used to make the roiling sliding friction experiment, the features of the tangent forces on wheel tread under the environment conditions of certain temperature and relative humidity as well as the effect on the running stability of railway vehicle are discussed.