Abstract

A comparison of the patterns of development of fatigue cracks in the modeling of the operational loading process and the calculated pattern, according to the linear summation algorithm using the standard fatigue fracture kinetic diagram of the same material, is carried out. The material is the low-alloy steel type 20L. During the tests, the load on a curved railway track section was simulated. The parameters of the original fatigue fracture kinetic diagram of material were corrected to adapt it to the calculation under irregular loading of this type.

中文翻译：

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铁路铸件在运行荷载下的耐久性分析

摘要

根据使用相同材料的标准疲劳断裂动力学图的线性求和算法，对操作加载过程建模中的疲劳裂纹发展模式与计算模式进行了比较。材质为20L型低合金钢。在测试过程中，模拟了弯曲铁路轨道部分上的载荷。对原始材料疲劳断裂动力学图的参数进行修正，使其适应该类不规则载荷下的计算。