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中低速磁浮车岔耦合振动研究

吴会超 罗建利 周文 王永刚 高峰 崔涛 石俊杰

吴会超, 罗建利, 周文, 王永刚, 高峰, 崔涛, 石俊杰. 中低速磁浮车岔耦合振动研究[J]. 西南交通大学学报, 2022, 57(3): 483-489. doi: 10.3969/j.issn.0258-2724.20210829
引用本文: 吴会超, 罗建利, 周文, 王永刚, 高峰, 崔涛, 石俊杰. 中低速磁浮车岔耦合振动研究[J]. 西南交通大学学报, 2022, 57(3): 483-489. doi: 10.3969/j.issn.0258-2724.20210829
WU Huichao, LUO Jianli, ZHOU Wen, WANG Yonggang, GAO Feng, CUI Tao, SHI Junjie. Coupled Vibration Between Low-Medium Speed Maglev Vehicle and Turnout[J]. Journal of Southwest Jiaotong University, 2022, 57(3): 483-489. doi: 10.3969/j.issn.0258-2724.20210829
Citation: WU Huichao, LUO Jianli, ZHOU Wen, WANG Yonggang, GAO Feng, CUI Tao, SHI Junjie. Coupled Vibration Between Low-Medium Speed Maglev Vehicle and Turnout[J]. Journal of Southwest Jiaotong University, 2022, 57(3): 483-489. doi: 10.3969/j.issn.0258-2724.20210829

中低速磁浮车岔耦合振动研究

doi: 10.3969/j.issn.0258-2724.20210829
基金项目: 国家重点研发计划(2016YFB1200601)
详细信息
    作者简介:

    吴会超(1980—),男,高级工程师,博士,研究方向为车辆系统动力学及其疲劳强度,E-mail:48346484@qq.com

  • 中图分类号: U260.11

Coupled Vibration Between Low-Medium Speed Maglev Vehicle and Turnout

  • 摘要:

    为研究中低速磁浮道岔主动梁关键参数对车岔耦合振动的影响,进行了各工况下磁浮道岔主动梁的模态测试,并建立了考虑道岔主动梁弹性振动的车岔耦合动力学模型,对悬浮稳定性进行了分析. 通过仿真与试验对比,对道岔主动梁的模态特征进行了修正,并基于修正后的车岔耦合动力学模型,研究了磁浮道岔主动梁不同设计参数对悬浮稳定性的影响规律. 研究结果表明:中间台车采用50 MN/m的弹性约束进行等效,能够达到比较理想的误差要求;二台车支撑方案相比三台车支撑方案,更容易避开磁浮车岔耦合的共振频率;随着主动梁一阶垂向弯曲频率的不断增大,悬浮控制参数的稳定区间越小,当道岔主动梁垂向弯曲频率大于12 Hz时,更容易出现车岔耦合振动现象;随着道岔主动梁刚度的增加,悬浮控制参数的稳定范围越小;增加道岔主动梁结构阻尼比不能解决车岔耦合共振问题,只能降低振动幅值大小;随着道岔主动梁线密度的增大,越不容易出现车岔共振现象,当线密度低于1 500 kg/m时,悬浮稳定区间将急剧下降;中间台车的等效支撑刚度越大,控制参数的稳定区间越小,但影响幅度不大.

     

  • 图 1  中低速磁浮道岔结构

    Figure 1.  Structure of low-medium speed maglev turnout

    图 2  车岔耦合振动模型

    Figure 2.  Vehicle-turnout coupled vibration model

    图 3  悬浮间隙稳定相轨迹

    Figure 3.  Trajectory of levitating gap in stability phase

    图 4  悬浮间隙失稳相轨迹

    Figure 4.  Trajectory of levitating gap in instability phase

    图 5  两台车与三台车对悬浮稳定性的影响

    Figure 5.  Influence of two-bogie and three-bogie schemes on levitating stability

    图 6  弯曲频率对悬浮稳定性的影响

    Figure 6.  Influence of bending frequency on levitating stability

    图 7  道岔梁刚度对悬浮稳定性的影响

    Figure 7.  Influence of turnout beam stiffness on levitating stability

    图 8  道岔梁阻尼比对悬浮稳定性的影响

    Figure 8.  Influence of the damping ratio of turnout beam on levitating stability

    图 9  道岔梁线密度对悬浮稳定性的影响

    Figure 9.  Influence of the linear density of turnout beam on levitating stability

    图 10  控制参数与悬浮稳定性关系

    Figure 10.  Relationships between control parameters and levitating stability

    表  1  模态测试结果

    Table  1.   Results of modal tests

    试验工况模态振型频率/Hz阻尼比
    1一阶垂向弯曲11.560.012
    2一阶垂向弯曲16.250.059
    3一阶垂向弯曲10.000.030
    下载: 导出CSV

    表  2  模态仿真结果

    Table  2.   Results of modal simulations

    仿真工况模态振型频率/Hz
    自由状态一阶垂向弯曲23.65
    两台车方案一阶垂向弯曲11.48
    三台车方案一阶垂向弯曲15.40
    下载: 导出CSV

    表  3  模态仿真结果

    Table  3.   Results of modal simulations

    试验结果/Hz仿真结果/Hz误差/%
    11.5611.480.7
    16.2515.405.0
    下载: 导出CSV

    表  4  模型参数

    Table  4.   Parameters of model

    符号数值符号数值
    ${M_{\rm{c}}}$24000 kg${C_{\rm{s}}}$6 kN·s/m
    ${I_{\rm{c}}}$84 620 kg·m2${L_{\rm{s}}}$2.46 m
    ${M_{\rm{e}}}$1 774 kg${L_{\rm{e}}}$1.39 m
    ${I_{\rm{e}}}$1 312 kg·m2${K_{\rm{b}}}$50 MN/m
    ${K_{\rm{s}}}$0.08 MN/m${C_{\rm{b}}}$2 kN·s/m
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-10-26
  • 修回日期:  2021-12-29
  • 刊出日期:  2022-01-14

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