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车轮扁疤状态下的铁路货车动力学表征研究

丁春嵘 彭莘宇 汪群生

丁春嵘, 彭莘宇, 汪群生. 车轮扁疤状态下的铁路货车动力学表征研究[J]. 机械科学与技术, 2021, 40(8): 1279-1284. doi: 10.13433/j.cnki.1003-8728.20200205
引用本文: 丁春嵘, 彭莘宇, 汪群生. 车轮扁疤状态下的铁路货车动力学表征研究[J]. 机械科学与技术, 2021, 40(8): 1279-1284. doi: 10.13433/j.cnki.1003-8728.20200205
DING Chunrong, PENG Xinyu, WANG Qunsheng. Research on Dynamic Characterization of Railway Freight Car under Wheel Flat Condition[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(8): 1279-1284. doi: 10.13433/j.cnki.1003-8728.20200205
Citation: DING Chunrong, PENG Xinyu, WANG Qunsheng. Research on Dynamic Characterization of Railway Freight Car under Wheel Flat Condition[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(8): 1279-1284. doi: 10.13433/j.cnki.1003-8728.20200205

车轮扁疤状态下的铁路货车动力学表征研究

doi: 10.13433/j.cnki.1003-8728.20200205
基金项目: 

国家自然科学基金项目 U2034210

牵引动力国家重点实验室自主课题项目 2019TPL-T18

详细信息
    作者简介:

    丁春嵘(1972-), 高级工程师, 研究方向为铁道机车车辆检修, dcr306@163.com

    通讯作者:

    汪群生, 助理研究员, 博士, wangqunsheng@126.com

  • 中图分类号: U272

Research on Dynamic Characterization of Railway Freight Car under Wheel Flat Condition

  • 摘要: 为研究货车车轮扁疤状态下的动力学表征, 为车轮扁疤的间接识别提供理论支撑, 建立了配置有转K6转向架的C80铁路货车动力学模型, 并推导了扁疤对钢轨的垂向冲击力公式及振动加速度公式, 研究了车轮扁疤故障状态下的车轮轮轨力响应、承载鞍振动响应情况, 并分析了故障状态下车轮扁疤长度与轮轨垂向力对应关系, 为扁疤的故障检测和识别提供基础支撑。结果表明: 扁疤故障状态下, 轮轨垂向力与扁疤长度呈正比例关系, 且轮轨力最大值随车辆运行速度增大而呈现先增大后缓慢减小的趋势, 承载鞍振动加速度变化趋势与轮轨垂向力基本保持一致。
  • 图  1  C80货车动力学仿真模型

    图  2  车轮旧扁疤深度随长度变化关系

    图  3  车轮扁疤理论计算图示

    图  4  车速60 km/h, 扁疤长度20 mm时轮轨垂向力的时域图

    图  5  空车下不同车速扁疤长度对轮轨最大垂向力的影响

    图  6  重车下60 km/h, 30 mm扁疤时轮力时域图

    图  7  重车下不同车速扁疤长度对轮轨最大垂向力的影响

    图  8  不同扁疤长度车速对承载鞍振动加速度的影响

    表  1  车辆各轮轮轨垂向力最大值对比

    轮对编号 左轮/kN 右轮/kN
    1 62.387 73.097
    2 28.043 28.144
    3 28.231 28.389
    4 27.622 27.613
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-03-28
  • 刊出日期:  2021-10-09

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