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高速接触线动态疲劳可靠性研究

刘方林 张静 杨红梅 金光

刘方林, 张静, 杨红梅, 金光. 高速接触线动态疲劳可靠性研究[J]. 机械科学与技术, 2016, 35(10): 1618-1623. doi: 10.13433/j.cnki.1003-8728.2016.1024
引用本文: 刘方林, 张静, 杨红梅, 金光. 高速接触线动态疲劳可靠性研究[J]. 机械科学与技术, 2016, 35(10): 1618-1623. doi: 10.13433/j.cnki.1003-8728.2016.1024
Liu Fanglin, Zhang Jing, Yang Hongmei, Jin Guang. Investigation on Dynamic Fatigue Reliability of High-speed Contact Wires[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(10): 1618-1623. doi: 10.13433/j.cnki.1003-8728.2016.1024
Citation: Liu Fanglin, Zhang Jing, Yang Hongmei, Jin Guang. Investigation on Dynamic Fatigue Reliability of High-speed Contact Wires[J]. Mechanical Science and Technology for Aerospace Engineering, 2016, 35(10): 1618-1623. doi: 10.13433/j.cnki.1003-8728.2016.1024

高速接触线动态疲劳可靠性研究

doi: 10.13433/j.cnki.1003-8728.2016.1024
基金项目: 

国家自然科学基金项目(51007074)资助

详细信息
    作者简介:

    刘方林(1987-),硕士研究生,研究方向为牵引供电,865795694@qq.com

    通讯作者:

    张静(联系人),教授,博士,硕士生导师,Zhangjing79@home.swjtu.edu.cn

Investigation on Dynamic Fatigue Reliability of High-speed Contact Wires

  • 摘要: 接触线在实际运营中长期受到受电弓的冲击,易发生疲劳破坏,对其疲劳可靠性分析具有重要意义,为解决实际统计数据匮乏的问题,提出了一种基于弓网动态仿真的接触线疲劳可靠性评估方法。采用威布尔分布来描述接触线的疲劳寿命,结合其S-N曲线,通过推导建立了接触线疲劳可靠性与使用寿命和应力循环的关系;基于模态分解法建立高速弓网动力学模型,计算接触线最薄弱单元的应力时程;利用雨流计数法统计出每个应力循环的均值和幅值,带入可靠性模型中,绘制接触线疲劳可靠性曲线,并研究了接触线预张力的变化对接触线可靠性的影响。算例中,当使用时间超过9年时,接触线疲劳可靠性将会低于0.98,预张力的增大会导致接触线可靠性的下降。
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出版历程
  • 收稿日期:  2014-09-15
  • 刊出日期:  2016-10-05

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