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高速铁路制动区间钢轨摩擦自激振动研究

崔晓璐 包鹏羽 陈佳欣 杨宗超

崔晓璐, 包鹏羽, 陈佳欣, 杨宗超. 高速铁路制动区间钢轨摩擦自激振动研究[J]. 西南交通大学学报, 2023, 58(1): 141-149. doi: 10.3969/j.issn.0258-2724.20210173
引用本文: 崔晓璐, 包鹏羽, 陈佳欣, 杨宗超. 高速铁路制动区间钢轨摩擦自激振动研究[J]. 西南交通大学学报, 2023, 58(1): 141-149. doi: 10.3969/j.issn.0258-2724.20210173
CUI Xiaolu, BAO Pengyu, CHEN Jiaxin, YANG Zongchao. Rail Friction Self-Excited Vibration in Braking Section of High-Speed Railway[J]. Journal of Southwest Jiaotong University, 2023, 58(1): 141-149. doi: 10.3969/j.issn.0258-2724.20210173
Citation: CUI Xiaolu, BAO Pengyu, CHEN Jiaxin, YANG Zongchao. Rail Friction Self-Excited Vibration in Braking Section of High-Speed Railway[J]. Journal of Southwest Jiaotong University, 2023, 58(1): 141-149. doi: 10.3969/j.issn.0258-2724.20210173

高速铁路制动区间钢轨摩擦自激振动研究

doi: 10.3969/j.issn.0258-2724.20210173
基金项目: 国家自然科学基金(52275176,51805057);中国博士后科学基金(2019M663889XB);重庆市基础研究与前沿探索项目(cstc2018jcyjAX0636);重庆市教委科学技术研究项目(KJQN201900734)
详细信息
    作者简介:

    崔晓璐(1990—),女,教授,博士,研究方向为轮轨摩擦学,E-mail:cui_xiaolu@foxmail.com

  • 中图分类号: U211

Rail Friction Self-Excited Vibration in Braking Section of High-Speed Railway

  • 摘要:

    为了探究高速铁路制动区间的典型钢轨波磨现象,基于轮轨摩擦自激振动诱导钢轨波磨的观点展开了研究,通过武广高速铁路制动区段的现场调研,掌握该区段的波磨特征并采集相应的轨道不平顺;基于轮轨摩擦自激振动诱导钢轨波磨的观点分别建立制动区段高速列车的动/拖车轮对-轨道-制动系统的有限元模型,并利用复特征值法进行动/拖车轮轨系统的摩擦自激振动分析,比较动/拖车轮轨系统在制动和非制动工况下系统发生摩擦自激振动的可能性,以及在制动工况下动车轮轨和拖车轮轨系统的摩擦自激振动情况;使用控制变量法研究了制动系统摩擦系数和扣件垂向刚度对动/拖车轮轨系统摩擦自激振动的影响规律. 研究结果表明:制动工况更容易引起系统的摩擦自激振动;拖车轮轨系统更容易引起系统摩擦自激振动;控制制动装置摩擦系数约为0.30,扣件垂向刚度约为50 MN/m时能一定程度降低轮轨系统发生摩擦自激振动的可能性,进而抑制钢轨波磨的产生.

     

  • 图 1  1871.3 km处钢轨波磨

    Figure 1.  Rail corrugation at 1871.3 km

    图 2  D3波段的钢轨表面不平顺

    Figure 2.  Rail surface irregularity of D3 waveband

    图 3  动/拖车轮对-轨道-制动系统的接触模型

    Figure 3.  Contact models of wheelset-track-braking system of power/trailer

    图 4  动/拖车轮对-轨道-制动系统的有限元模型

    Figure 4.  Finite element models of wheelset-track-braking system of power/trailer

    图 5  制动盘的有限元模型

    Figure 5.  Finite element models of brake disc

    图 6  动/拖车轮轨系统摩擦自激振动频率分布

    Figure 6.  Frequency distribution of friction self-excited vibration of wheel/rail system of power/trailer

    图 7  制动参数变化对动车轮轨系统的影响

    Figure 7.  Influence of braking parameters variation on wheel/rail system of power

    图 8  制动参数变化对拖车轮轨系统的影响

    Figure 8.  Influence of braking parameters variation on wheel/rail system of trailer

    图 9  扣件参数变化对动/拖车轮轨系统的影响

    Figure 9.  Influence of fastener parameters variation on wheel/rail system of power/trailer

    表  1  部件材料参数

    Table  1.   Material parameters of components

    部件密度/(kg•m−3弹性模量/MPa泊松比
    轮对 7800 210000 0.3
    钢轨 7800 205900
    制动闸片 2500 8100
    制动托 5600 100000
    制动杠杆 7000 190000
    轮盘/轴盘 7300 207000
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出版历程
  • 收稿日期:  2021-03-09
  • 修回日期:  2021-05-18
  • 网络出版日期:  2023-01-09
  • 刊出日期:  2021-05-20

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