一个非线性的非稳态蠕滑力计算模型

A Non-Linear Model for Non-Steady State Creep Force Calculation

本文讨论了由轨道对车轮的简谐动态输入引起的线性化简谐蠕滑率对蠕滑力的影响。用弹性理论半空间假设下的数值解法，同时考虑接触区内粘着区和渭动区的非稳态变化和切向面力的非稳态变化，反复迭代，计算了非稳态的蠕滑系数，得出线性的非稳态蠕滑率－力关系，并将其与沈志云－赫居里克－埃尔金斯理论结合，推广到了非线性的情形。

An analysis of the effects of harmonically varying creepage on creep force which can be caused by non-steadystate wheel-rail interaction is prsented. Frequency-dependent creep coefficients for an extended Kalker's linear creep-force theory are calculated by considering the variation of slip area and adhesion area and of traction distributions in the contact area. An extension of the non-linear Shen-Hedrick-Elkins theory to the non-steadystate case is made.