机车车辆滚动振动试验台系统轮－轮接触关系的研究

机车车辆滚动振动试验台是以有限半径的滚轮代替轨道。滚轮的引入将导致滚轮与轮对之间的接触关系有别于轨道与轮对之间的接触关系，这将影响到滚动振动试验台进行机车车辆动力学性能试验的结果。本文就滚动振动试验台轮－轮接触几何关系及其接触界面多数进行了推导计算，结合实例与线路运行的轮－轨接触状态进行了分析比较，并给出误差影响情况。 

A Study of Wheel-Roller Contact Relations on Rail Vehicle Roller Rig System

Using finite rollers instead of straight rail on rail vehicle roller rig,the wheel-roller contact relations are different from those of the wheel-rail case. It will affect dynamics testing results of rail vehicles runing on such roller rig.Therefore,the wheel-roller contact geometry and contact in the paper,shapes and sizes of contact patch,creepforces,and creepages are studied.The results are also compared with the wheel- rail condition,with differences presented.