研究了含内部裂纹的磨耗型踏面铁路车轮与60 kg/m钢轨的接触关系问题.建立了存在不同尺寸及角度内部裂纹的轮轨接触三维有限元模型.通过计算,获得了不同情况下裂纹周边以及轮轨接触区的Mises应力分布规律.分析结果表明:当裂纹越靠近接触区时,裂纹周边应力越大;裂纹与踏面角度为45°时,裂纹最容易扩展.%The abrasion of railway wheel with internal crack and 60 kg/m rails is studied. The 3 d finite ele-ment model with different sizes and angles of internal cracks of the wheel/rail contact is established. Through calculation,the Mises stress distributions of the wheel/rail contact are obtain. Analysis results show that when the cracks is close to the contact zone,the stress is the greater around the crack. The crack is the easiest to extend when the angle of crack and tread is 45 ° .
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