中文摘要：

为了分析列车在蛇形运动状态下轮轨接触区域的形状、面积、轮轨接触应力和Mises应力的特性，根据有限元理论并结合ANSYS有限元软件，建立包含一个轮对的轮轨系统有限元模型，计算分析轮轨接触特性与轴重和轮对摇头角之间的关系，计算结果表明：轮对摇头角对接触特性的影响不是很明显，而轴重和轮对中心横移量对轮轨接触斑的面积和形状有着显著的影响；接触斑的形状不同于用Hertz理论得到的椭圆形接触斑。

英文摘要：

To investigate the characteristics of contact shapes, areas, contact stress and Mises stress in wheel/rail contact regions in case of hunting motion, a finite element model of wheel/rail system comprising of two wheelsets is established based on finite element theory and ANSYS. The relationships between contact characteristics and axle loads and wheelset yaw angles are calculated and analyzed. The results show that the effect of wheelset yaw angles on the contact characteristics is not obvious, but the axle loads and wheel center transverse movement have significant effect on the contact areas and shapes,＆nbsp;and the contact shapes are different from the elliptic contact shapes obtained by Hertz theory.