在轮轨单点接触计算分析的基础上,建立锥形踏面车轮的轮缘贴靠钢轨形成两点接触的计算模型,应用有限元参数二次规划法分析这一弹塑性接触问题。对不同载荷作用下的轮轨两点接触模型分别进行计算,得出了大量的轮轨接触状态、接触力的分布及变化规律。这些计算结果将有助于找到缓解钢轨侧磨和轮缘磨耗的方法。 Based on the single-point contact analysis of wheel-rail, a calculation model of the two-point contact between the rims of the conical tread wheel and the rail is established, and the elasto-plastic contact problem is analyzed by the quadratic programming method of the finite element method. The wheel-rail two-point contact model under different loads is calculated respectively, and a large number of wheel-rail contact states, contact force distribution and variation rules are obtained. These calculations will help to find ways to mitigate rail side and rim wear.