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基于车辆-移动轨道耦合模型的列车碰撞爬车行为

杨超 李强 王曦 王明猛

杨超, 李强, 王曦, 王明猛. 基于车辆-移动轨道耦合模型的列车碰撞爬车行为[J]. 西南交通大学学报, 2019, 54(6): 1298-1304. doi: 10.3969/j.issn.0258-2724.20170948
引用本文: 杨超, 李强, 王曦, 王明猛. 基于车辆-移动轨道耦合模型的列车碰撞爬车行为[J]. 西南交通大学学报, 2019, 54(6): 1298-1304. doi: 10.3969/j.issn.0258-2724.20170948
YANG Chao, LI Qiang, WANG Xi, WANG Mingmeng. Overriding Behavior in Train Collisions Based on Moving Vehicle-Track Coupled Model[J]. Journal of Southwest Jiaotong University, 2019, 54(6): 1298-1304. doi: 10.3969/j.issn.0258-2724.20170948
Citation: YANG Chao, LI Qiang, WANG Xi, WANG Mingmeng. Overriding Behavior in Train Collisions Based on Moving Vehicle-Track Coupled Model[J]. Journal of Southwest Jiaotong University, 2019, 54(6): 1298-1304. doi: 10.3969/j.issn.0258-2724.20170948

基于车辆-移动轨道耦合模型的列车碰撞爬车行为

doi: 10.3969/j.issn.0258-2724.20170948
基金项目: 中央高校基本科研业务费专项资金资助项目(2018JBM048);中国博士后科学基金资助项目(2017M620599);国家重点研发计划资助项目(2016YFB1200403,2016YFB1200404);国家自然科学基金资助项目(11790281,51505390)
详细信息
    作者简介:

    杨超(1988—),男,讲师,博士,研究方向为列车被动安全,E-mail:ychao@bjtu.edu.cn

  • 中图分类号: U270.11

Overriding Behavior in Train Collisions Based on Moving Vehicle-Track Coupled Model

  • 摘要: 为了揭示车辆参数对列车碰撞爬车行为的影响规律,首先基于车轨耦合的基本思路,建立车辆模型和移动轨道模型,用非线性轮轨接触模型耦合车辆模型和移动轨道模型;非线性钩缓装置模型用于连接相邻的两个车辆模型;然后通过模拟两同型列车低速正面碰撞,获得了不同参数情况下车辆和轨道的动态响应;最后用车轮抬升量作为车辆碰撞爬车指标,分析了车轮抬升量对碰撞速度、车体质心高度和二系垂向刚度的灵敏度和相对灵敏度. 结果表明:在其他条件不变的情况下,当碰撞速度增大至27 km/h时,车轮抬升量陡增至36.5 mm;质心高度增大20%时,车轮抬升量增加41%;二系垂向刚度增大20%时,车轮抬升量减小16.6%;车轮抬升量随碰撞速度和质心高度的增大而增大,而随着二系垂向刚度的增大而减小;车轮抬升量对碰撞速度的灵敏度是非线性的;质心高度和二系垂向刚度的相对灵敏度分别为205%和−83%.

     

  • 图 1  列车碰撞模型

    Figure 1.  Train collision model

    图 2  车辆-移动轨道耦合模型

    Figure 2.  Coupled model of a vehicle and moving tracks

    图 3  钩缓装置的压缩特性

    Figure 3.  Compression characteristics of coupler device

    图 4  速度对车轮抬升量的影响

    Figure 4.  Influence of impact speed on wheel lift

    图 5  质心高度对车轮抬升量的影响

    Figure 5.  Influence of heights of mass center on wheel lift

    图 6  二系垂向刚度对车轮抬升量的影响

    Figure 6.  Influence of vertical stiffness of secondary suspensions on wheel lift

    图 7  车轮抬升量对参数的灵敏度

    Figure 7.  Sensitivity of wheel lift to vehicle parameters

    图 8  车轮抬升量的相对灵敏度

    Figure 8.  Relative sensitivity of wheel lift

    表  1  车辆模型的自由度

    Table  1.   Degrees of freedom of vehicle model

    组件自由度组件数量/个自由度数量/个
    xzβ
    车体 1 3
    构架 2 6
    轮对 4 8
    总计 7 17
    下载: 导出CSV

    表  2  移动轨道模型的自由度

    Table  2.   Degrees of freedom of moving track model

    组件自由度组件数量/个自由度数量/个
    xzβ
    钢轨 4 4
    轨枕 4 4
    总计 8 8
    下载: 导出CSV

    表  3  钩缓装置模型的参数

    Table  3.   Parameters of coupler model

    变量数值变量数值
    端部中间端部中间
    δc/m 0.573 0.473 kul/(N•m−1 1 × 104 1 × 104
    f0/N 1 × 106 1 × 106 kr/(N•m−1 1 × 108 1 × 108
    al/m−1 50 20
    下载: 导出CSV

    表  4  可变参数

    Table  4.   Variable parameters

    参数大小
    初值105%110%120%
    速度/(km•h−120212224
    质心高度/m1.801.891.982.16
    垂向刚度/(kN•m−1800840880960
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-01-17
  • 修回日期:  2018-04-13
  • 网络出版日期:  2018-09-14
  • 刊出日期:  2019-12-01

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