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考虑材料温变特性的三维轮轨接触热分析

王平 张洪吉 孙耀亮 安博洋 何庆

王平, 张洪吉, 孙耀亮, 安博洋, 何庆. 考虑材料温变特性的三维轮轨接触热分析[J]. 西南交通大学学报, 2024, 59(2): 239-246, 306. doi: 10.3969/j.issn.0258-2724.20220093
引用本文: 王平, 张洪吉, 孙耀亮, 安博洋, 何庆. 考虑材料温变特性的三维轮轨接触热分析[J]. 西南交通大学学报, 2024, 59(2): 239-246, 306. doi: 10.3969/j.issn.0258-2724.20220093
WANG Ping, ZHANG Hongji, SUN Yaoliang, AN Boyang, HE Qing. Three-Dimensional Wheel–Rail Contact Thermal Analysis Considering Temperature-Dependent Material Property[J]. Journal of Southwest Jiaotong University, 2024, 59(2): 239-246, 306. doi: 10.3969/j.issn.0258-2724.20220093
Citation: WANG Ping, ZHANG Hongji, SUN Yaoliang, AN Boyang, HE Qing. Three-Dimensional Wheel–Rail Contact Thermal Analysis Considering Temperature-Dependent Material Property[J]. Journal of Southwest Jiaotong University, 2024, 59(2): 239-246, 306. doi: 10.3969/j.issn.0258-2724.20220093

考虑材料温变特性的三维轮轨接触热分析

doi: 10.3969/j.issn.0258-2724.20220093
基金项目: 国家自然科学基金(52108418,U1934214);中央高校基本科研业务费(2682021CX016)
详细信息
    作者简介:

    王平(1969—),男,教授,博士,研究方向为高速重载轨道结构及轨道动力学,E-mail:wping@home.swjtu.edu.cn

    通讯作者:

    何庆(1982—),男,教授,博士,研究方向为智能交通系统大数据分析,E-mail:qhe@swjtu.edu.cn

  • 中图分类号: U211.5

Three-Dimensional Wheel–Rail Contact Thermal Analysis Considering Temperature-Dependent Material Property

  • 摘要:

    为研究材料温变特性对轮轨接触行为和摩擦温升的影响,提出了一种考虑材料温变特性的三维轮轨热力耦合模型,能够考虑纵、横向蠕滑率和自旋的影响,更为真实地模拟轮轨系统的服役状态. 首先,研究了热力耦合建模方式对轮轨界面摩擦温升及接触应力的影响;随后,将该模型应用于地铁小半径曲线处车辆-轨道相互作用模拟. 结果表明:当轮轨界面温度达到450 ℃时,轮轨接触应力显著降低,降幅可达20%;考虑热力耦合建模后,轮轨界面的预测温升明显低于不考虑热力耦合建模时的结果,在蠕滑率为0.16时,两者的差异可达51%;地铁车辆在小半径曲线线路上运行时轮轨摩擦温升因过大的蠕滑率与自旋会急剧增大到750 ℃,应考虑轮轨热力耦合建模以避免过高估计轮轨摩擦温升以及轮轨接触应力.

     

  • 图 1  轮轨相对滑动示意

    Figure 1.  Relative sliding of wheel and rail

    图 2  2种模拟方式条件下轮轨界面摩擦温升对比

    Figure 2.  Comparison of frictional temperature rise of wheel–rail interface under two simulation conditions

    图 3  2种模拟方式条件下钢轨内部的温度场分布对比

    Figure 3.  Comparison of temperature field distribution inside the rail under two simulation methods

    图 4  钢轨表面最大温升随蠕滑率变化

    Figure 4.  Variation of maximum temperature rise of rail surface with creepage rate

    图 5  接触斑面积与最大法向应力随纵向蠕滑率变化

    Figure 5.  Variation of contact spot area and maximum normal stress with longitudinal creepage rate

    图 6  动力学仿真模型

    Figure 6.  Dynamic simulation model

    图 7  线路内外侧轮轨蠕滑率变化

    Figure 7.  Variation of wheel–rail creepage rate inside and outside the line

    图 8  线路外轨表面温升情况

    Figure 8.  Surface temperature rise of outer rail of the line

    图 9  仿真线路外轨部分接触状态

    Figure 9.  Contact state of outer rail of simulated line

    图 10  接触斑摩擦能量指数分布

    Figure 10.  Distribution of friction energy index of contact spot

    图 11  工况摩擦温升及误差分布

    Figure 11.  Frictional temperature rise and error distribution under working conditions

    表  1  随温度变化的比热容和导热系数

    Table  1.   Specific heat capacity and thermal conductivity at different temperatures

    温度/℃比热容/(J·kg−1·℃−1导热系数/(W·m−1·℃−1
    0419.559.71
    350629.540.88
    703744.530.21
    710652.930.00
    800657.725.00
    950665.227.05
    1200677.330.46
    下载: 导出CSV

    表  2  随温度变化的材料参数

    Table  2.   Material parameters at different temperatures

    温度/℃弹性模量/GPa泊松比
    242130.295
    2302010.307
    3581930.314
    4521780.320
    5671020.326
    900430.345
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-02-08
  • 修回日期:  2022-07-09
  • 网络出版日期:  2023-09-13
  • 刊出日期:  2022-07-13

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