基于ANSYS的荷载工况对轮轨接触阻抗的影响分析
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1.兰州交通大学自动化与电气工程学院;2.西北民族大学电气工程学院

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国家自然科学基金项目(面上项目,重点项目,重大项目)


The influence of load condition on wheel-rail contact impedance based on ANSYS
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1.School of Automation and Electrical Egineering ,Lanzhou Jiaotong University;2.School of Electrical Engineering,Northwest Minzu University

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    摘要:

    高速铁路站内绝缘节烧损事故时有发生,轮轨接触电阻是引起轮轨电弧造成绝缘节烧损的重要指标,因此准确计算接触电阻是分析绝缘节烧损问题的重要基础,接触电阻的大小主要取决于轮轨接触斑点的面积。对此,通过有限元分析软件ANSYS计算不同荷载工况下轮轨接触面积,分析列车轴重和偏移量对接触电阻的影响规律。结果表明,轴重从9t增加到27t时,轮轨接触电阻减小近34%;横移量增大6mm时,轮轨接触电阻减小25%。轮轨接触电阻的变化随着轴重和轮轨横移量的增加呈现相同的变化趋势。

    Abstract:

    The burning accidents of insulation joints often occur in high-speed railway stations. The wheel-rail contact resistance is an important index to cause the burning loss of insulation joints by wheel-rail arc,Therefore, accurate calculation of contact resistance is an important basis for analyzing the burning loss of insulation joint .The size of the contact resistance mainly depends on the area of the wheel and rail contact spots. For this, calculate the wheel-rail contact area under different working conditions by ANSYS, Analysis of the influence rule of the train axle load and offset on contact spot area, The results show that when axle load increases from 9t to 27t, the wheel-rail contact resistance decreases by nearly 34%. The wheel-rail contact resistance decreases by 25% when the lateral displacement increases by 6mm. The change of wheel-rail contact resistance presents same trend with the increase of axle load and wheel-rail contact resistance.

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  • 收稿日期:2020-04-21
  • 最后修改日期:2020-07-10
  • 录用日期:2020-07-31
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