Abstract

The distribution of the dynamic load on railroad track caused by a moving heavy train is numerically simulated. The track is represented as a multilayered linear elastic medium. A complete system of equations describing the state of a linear elastic body and a system of continuum mechanics equations are solved. The grid-characteristic method is used, which ensures the formulation of correct contact and boundary conditions. Analytical expressions taking into account the impact of damaged wheels on rails are derived, and corresponding boundary conditions are developed and numerically implemented.

中文翻译：

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车轮对铁路轨道影响建模的边界条件

摘要

数值模拟了运动中的重型火车在铁轨上引起的动载荷分布。轨道表示为多层线性弹性介质。解决了描述线性弹性体状态的完整方程组和连续力学方程组。使用网格特征方法，可确保制定正确的接触条件和边界条件。推导了考虑损坏车轮对轨道影响的解析表达式，并开发了相应的边界条件并进行了数值计算。