| 轮轨接触应力数值计算方法 |
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| 引用本文： | 卢萍,崔大宾,王宁.轮轨接触应力数值计算方法[J].润滑与密封,2009,34(7). |
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| 作者姓名： | 卢萍 崔大宾 王宁 |
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| 作者单位： | 1. 西南科技大学土木工程与建筑学院,四川绵阳,621010
2. 西南交通大学机械工程学院,四川成都,610031 |
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| 摘 要： | 为了得到轮轨接触应力较精确的数值解,分别采用Hertz接触理论模型、传统有限元模型及改进有限元模型求解轮轨接触应力,并从计算精度和计算时间方面对3种模型进行了比较.结果表明,有限元模型较Hertz接触理论模型更能反映轮轨接触的实际情况,改进的有限元模型在允许的计算精度范围内可以大大提高计算效率;轮轨最大接触应力发生在轮轨表面以下约2.5 mm的位置,呈弧形分布,并随轴重的增加而增大,高应力区宽度增大,离初始接触位置一定距离处的钢轨表面出现高应力区.
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| 关 键 词： | 轮轨摩擦 接触应力 Hertz理论 有限元方法 |
Calculation and Analysis Method of Wheel/Rail Contact Stresses |
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| Lu Ping,Cui Dabin,Wang Ning.Calculation and Analysis Method of Wheel/Rail Contact Stresses[J].Lubrication Engineering,2009,34(7). |
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| Authors: | Lu Ping Cui Dabin Wang Ning |
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| Affiliation: | 1.School of Civil Engineering;Southwest University of Science and Technology;Mianyang Sichuan 621010;China;2.School of Mechanical Engineering;Southwest Jiaotong University;Chengdu Sichuan 610031;China |
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| Abstract: | In order to obtain the accurate numerical solution of wheel/rail contact stress,Hertzian contact theory and finite element method were used to calculate the wheel and rail contact stress.The difference of three calculation models in calculation accuracy and computing time were compared.The results show that the FEM method can better approach to the practice and the computational efficiency could be greatly improved using the improved FEM model in condition of meeting precision requirement.The maximum wheel-... |
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| Keywords: | wheel/rail friction contact stress Hertz theory finite element method |
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