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高速列车盘形制动系统热机耦合特性分析

王东伟 吴霄 项载毓 莫继良

王东伟, 吴霄, 项载毓, 莫继良. 高速列车盘形制动系统热机耦合特性分析[J]. 西南交通大学学报, 2021, 56(2): 428-436. doi: 10.3969/j.issn.0258-2724.20190879
引用本文: 王东伟, 吴霄, 项载毓, 莫继良. 高速列车盘形制动系统热机耦合特性分析[J]. 西南交通大学学报, 2021, 56(2): 428-436. doi: 10.3969/j.issn.0258-2724.20190879
WANG Dongwei, WU Xiao, XIANG Zaiyu, MO Jiliang. Investigation on Thermo-Mechanical Coupling Characteristics of Disc Brake System of High-Speed Train[J]. Journal of Southwest Jiaotong University, 2021, 56(2): 428-436. doi: 10.3969/j.issn.0258-2724.20190879
Citation: WANG Dongwei, WU Xiao, XIANG Zaiyu, MO Jiliang. Investigation on Thermo-Mechanical Coupling Characteristics of Disc Brake System of High-Speed Train[J]. Journal of Southwest Jiaotong University, 2021, 56(2): 428-436. doi: 10.3969/j.issn.0258-2724.20190879

高速列车盘形制动系统热机耦合特性分析

doi: 10.3969/j.issn.0258-2724.20190879
基金项目: 国家自然科学基金(51822508);国家自然科学基金面上项目(51675448)
详细信息
    作者简介:

    王东伟(1988—),男,工程师,博士,研究方向为机械系统动力学,E-mail:dongwei1013@sina.cn

  • 中图分类号: TH113.1

Investigation on Thermo-Mechanical Coupling Characteristics of Disc Brake System of High-Speed Train

  • 摘要: 为了研究热机耦合对高速列车制动系统动力学行为的影响,建立了高速列车制动系统三维瞬态热机耦合有限元模型,进行拖曳制动状态下热机耦合特性的计算与分析;采用ABAQUS/Explicit热-位移瞬态分析法,探讨列车制动过程中的温度分布特性和振动行为,并与忽略热机耦合状态的系统动力学行为进行对比分析. 研究结果表明:制动过程中闸片温度动态变化,且会形成局部高温区导致热斑形成;由于制动盘和闸片发生一定程度弹性翘曲变形,导致闸片温度周向分布和径向分布出现复杂的温度分布特性,在闸片的内外径处和进/出摩擦区域的温度分布差异显著;制动过程中闸片在法向和切向上的振荡程度逐渐减弱,但是总体变形量逐渐增大,位移形变量达到6 μm;热变形主要发生在闸片两侧,闸片在进摩擦区的变形量(35 μm)明显大于出摩擦区处(25 μm),而闸片的中部出现明显的"凹陷",即随着制动进行,闸片中部区域没有出现明显的热变形;在热机耦合状态下,制动系统振动先增大后降低,整体振动强度比忽略热机耦合时强;界面接触力的波动程度先增大后降低,总体呈上升趋势.

     

  • 图 1  列车制动系统有限元模型和边界条件

    Figure 1.  Finite element model of the high speed train disc brake system and its boundary conditions

    图 2  摩擦片进出摩擦区域示意

    Figure 2.  Schematic of the in and out friction zone of pad

    图 3  两侧闸片界面温度分布与弹性变形时变图

    Figure 3.  Temperature distribution and normal displacement graphs of the pads in both sides

    图 4  闸片不同区域温度周向分布情况

    Figure 4.  Temperature distribution of the brake pad in circle direction

    图 5  闸片不同区域温度径向分布情况

    Figure 5.  Temperature distribution of the brake pad in radial direction

    图 6  闸片在法向和切向热弹性变形行为

    Figure 6.  Deformation of the brake pad in both the tangential and normal directions

    图 7  闸片弹性变形周向分布

    Figure 7.  Elastic deformation of the pad in circular direction

    图 8  闸片弹性变形径向分布

    Figure 8.  Elastic deformation of the pad in radial direction

    图 9  列车制动系统振动信号分析

    Figure 9.  Vibration signals analysis of the high speed train disc brake system

    图 10  界面法向力和摩擦力

    Figure 10.  Normal force and friction force of the brake system

    表  1  有限元模型网格特征

    Table  1.   Mesh characteristics of the finite element model

    部件单元类型单元数/个节点数/个
    制动盘 C3D8RT 21144 32812
    闸片 C3D8RT 10477 13668
    闸片托 C3D8RT 16348 21401
    制动夹钳 C3D8T 15658 4507
    盘毂 C3D8T 8581 6149
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-09-24
  • 修回日期:  2019-11-29
  • 网络出版日期:  2020-08-18
  • 刊出日期:  2021-04-15

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