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随着铁路的高速化和重载化,车辆运行环境日益恶化,破坏的程度也越严重。针对机车特定轮重、相对滑动速度、摩擦系数的工况,应用有限元分析软件ANSYS对钢轨瞬态温度场作了计算研究,并利用其中的参数化设计语言(APDL)实现了移动载荷的加载。结果表明钢轨轨表面温度随摩擦系数和相对滑动速度的增加而增大,最高温升与摩擦系数和相对滑动速度呈线性关系。得出的温度场为钢轨结构优化设计提供了依据。
With the high speed and heavy load of railways, the running environment of vehicles is deteriorating day by day, and the degree of destruction is also getting worse. Aiming at the condition of specific wheel weight, relative sliding speed and friction coefficient, the finite element analysis software ANSYS is used to calculate the transient temperature field of the rail and the loading of the moving load is realized by using the Parametric Design Language (APDL) . The results show that the temperature of the rail surface increases with the increase of the friction coefficient and the relative sliding velocity. The maximum temperature rise has a linear relationship with the friction coefficient and the relative sliding velocity. The obtained temperature field provides the basis for the optimal design of the rail structure.