高速列车吸能结构设计和耐撞性分析

李松晏 郑志军 虞吉林

李松晏, 郑志军, 虞吉林. 高速列车吸能结构设计和耐撞性分析[J]. 爆炸与冲击, 2015, 35(2): 164-170. doi: 10.11883/1001-1455(2015)02-0164-07
引用本文: 李松晏, 郑志军, 虞吉林. 高速列车吸能结构设计和耐撞性分析[J]. 爆炸与冲击, 2015, 35(2): 164-170. doi: 10.11883/1001-1455(2015)02-0164-07
Li Song-yan, Zheng Zhi-jun, Yu Ji-lin. Energy-absorbing structure design and crashworthiness analysis of high-speed trains[J]. Explosion And Shock Waves, 2015, 35(2): 164-170. doi: 10.11883/1001-1455(2015)02-0164-07
Citation: Li Song-yan, Zheng Zhi-jun, Yu Ji-lin. Energy-absorbing structure design and crashworthiness analysis of high-speed trains[J]. Explosion And Shock Waves, 2015, 35(2): 164-170. doi: 10.11883/1001-1455(2015)02-0164-07

高速列车吸能结构设计和耐撞性分析

doi: 10.11883/1001-1455(2015)02-0164-07
基金项目: 国家自然科学基金项目(11372307);中国科学院创新工程方向项目(KJCX2-EW-L03)
详细信息
    作者简介:

    李松晏(1984—), 男, 博士研究生

    通讯作者:

    郑志军, zjzheng@ustc.edu.cn

  • 中图分类号: O342

Energy-absorbing structure design and crashworthiness analysis of high-speed trains

  • 摘要: 建立了高速列车头车的有限元模型,运用有限元软件LS-DYNA模拟了头车碰撞刚性墙的冲击过程。在碰撞发生时,原有设计方案的牵引梁主体的变形以整体屈曲为主,不利于缓冲吸能。在对原设计的耐撞性分析的基础上,建议对原有牵引梁结构加以改进,并在前端增加两组不同尺寸和厚度的带圆角的方管作为缓冲吸能管,考虑了在缓冲管中填充泡沫铝与否,形成了4种设计方案。数值模拟结果表明,与原设计方案相比,新方案的整个头车的吸能量有大幅度提高,刚性墙反力的峰值也有一定程度的降低,采用大的圆角半径的厚管并填充泡沫铝的方案的改进效果最明显。
  • 图  1  某型动车组头车的有限元模型

    Figure  1.  The finite element model of a head car of a high-speed train

    图  2  头车撞击刚性墙时的变形情况

    Figure  2.  Structural deformation of the head car crashing a rigid wall

    图  3  撞击刚性墙时牵引梁的变形情况

    Figure  3.  Structural deformation of the draft sill crashing a rigid wall

    图  4  刚性墙反力

    Figure  4.  Force on the rigid wall

    图  5  牵引梁的吸能量

    Figure  5.  Energy absorbed by the draft sill

    图  6  改进设计后的牵引梁和吸能管

    Figure  6.  The draft sill and the energy-absorbing tubes in the improvement schemes

    图  7  不同方案的吸能量

    Figure  7.  Energy absorbed in the different schemes

    图  8  不同方案的刚性墙反力

    Figure  8.  The force on the rigid wall in the different schemes

    图  9  方案4的牵引梁和吸能管的变形情况

    Figure  9.  The deformation of the draft sill and the energy absorber in scheme 4

    图  10  方案4的司机室变形情况

    Figure  10.  The deformation of the cab in scheme 4

    表  1  材料参数

    Table  1.   Material properties

    材料E/GPaνσy/MPaG/MPaρ/(kg·m-3)
    Q235钢2100.32352 1007 800
    A6N01铝合金700.32505732 700
    A5083铝合金620.31501 6102 700
    A7N01铝合金660.32901 2322 700
    下载: 导出CSV

    表  2  改进方案

    Table  2.   Improvement schemes

    方案c/mmr/mmd/mm填充泡沫铝
    17205
    27205
    38355
    48355
    下载: 导出CSV
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出版历程
  • 收稿日期:  2013-07-23
  • 修回日期:  2013-11-06
  • 刊出日期:  2015-03-25

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