A dynamic 3D finite element model for the calculation of profile degradation in the switch panel is presented. The model includes the contact between wheel and rail, as well as the contact between switch rail and stock rail to allow an elastic relative movement between the two rails. Break-outs of the switch rail tip can be facilitated by this relative movement and the stresses and strains at this interface are calculated. The profile degradation of the switch rail due to contact loading between wheel flange and switch rail is numerically simulated considering the cyclic plastic deformation of the rail material. The sliding wear is evaluated separately and superimposed to the geometrical change caused by the plastic deformation.

提出了一种用于计算开关面板中轮廓退化的动态 3D 有限元模型。该模型包括车轮和轨道之间的接触，以及转换轨道和备用轨道之间的接触，以允许两个轨道之间的弹性相对运动。这种相对运动可以促进道岔轨道尖端的断裂，并计算该界面处的应力和应变。考虑到钢轨材料的循环塑性变形，数值模拟了由于轮缘和道岔轨道之间的接触载荷导致的道岔轨道轮廓退化。滑动磨损单独评估并叠加到塑性变形引起的几何变化。