轮轨接触问题的弹塑性分析

Elasto plastic analysis of wheel rail contact problem

用有限元参数二次规划法 ,针对不同的轮径、轴重、牵引力和摩擦系数的各种工况分别进行了弹性和弹塑性计算 ,得出了轮轨间接触状态和接触内力的分布情况 ,并对其随各种参数变化的规律进行了分析 ,从而提出了改善机车粘着利用水平的途径。

Using the finite element parametric quadratic programming method,the computation of elastic and elasto plastic rolling contact problems between wheel and rail is carried out for various cases such as different wheel diameters,different axle loads,different tractive forces and different friction factors. The contact states and the contact internal forces between wheel and rail are obtained,and their changing laws corresponding with every above mentioned parameter are analyzed in this paper.