基于模态法的高速列车车体关键位置应力谱及寿命评估研究

摘要
图/表
参考文献(15)
相关文章 (0)

全文: PDF (4241 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要基于刚柔耦合理论，建立了考虑车体高频弹性振动的高速列车刚柔耦合动力学模型，利用模态应力恢复法对服役条件下车体关键位置动应力进行了求解。首先，通过扫频激励方法模拟了车辆典型服役模式，识别了典型服役工况下车体动态薄弱位置。其次，进一步研究了车体动态薄弱位置在不同轮轨匹配等效锥度下的特征应力谱。最后，基于京广线路条件仿真分析了不同轮轨匹配锥度状态下车体关键位置应力谱，并研究了不同应力谱编制方式对车体寿命评估的影响。结果表明：基于扫频激励方法的车体结构动态薄弱位置识别方法，可以有效识别车体结构动态薄弱位置；轮轨匹配等效锥度在镟修周期的动态演变会导致车辆稳定性下降，从而可以显著增大车体关键位置动应力幅值。因此，在车体结构关键位置寿命评估中，考虑轮轨关系动态演变对车辆关键部位应力谱的影响具有至关重要的意义。
关键词：高速列车高频刚柔耦合动力学模型；模态应力恢复；动态薄弱位置；特征应力谱；轮轨匹配等效锥度

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	李传迎1
	王秀刚1
	吴兴文2
	董晓华3
	池茂儒3

关键词 ：高速列车高频刚柔耦合动力学模型, 模态应力恢复, 动态薄弱位置, 特征应力谱, 轮轨匹配等效锥度

Abstract：A rigid-flexible coupled high-speed train dynamic model considering the elastic deformation of car body was developed by using the modal synthesis method, and the modal stress recovery method was used to calculate the dynamic stress of car body. By using the proposed dynamic model, different frequency sweep excitations that reflect different operating modes of vehicle were primarily employed to identify the dynamic weak points of the car body, then the influences of the wheel/rail contact condition on the stress spectrum of weak points were investigated considering different wheel/rail equivalent conicities. Moreover, the stress spectrum of weak points for a typical high-speed railway line were obtained through simulation of the proposed dynamic model considering different wheel/rail contact conditions. In addition, different methods used to construct the stress spectrum for weak points were discussed so as to demonstrate the influences of wheel/rail contact condition on the fatigue life of car body. The results suggest that the frequency sweep method together with the modal stress recovery method can be used to identify the dynamic weak point in the car body under the service condition. The degradation process of wheel/rail contact during the reprofiling cycle can significantly deteriorate the operational stability of vehicle, thereby increase the stress amplitude of weak points. Therefore, it is desirable to consider the degradation process of wheel/rail contact in the estimation of fatigue lifetime of weak points in the car body.
Key words：High frequency rigid-flexible coupled dynamic model of high-speed train, Modal stress recovery method, Dynamic week position, Characteristic stress spectrum, Equivalent conicity of wheel/rail contact

收稿日期: 2021-08-09 出版日期: 2022-12-15

引用本文:

李传迎1,王秀刚1，吴兴文2，董晓华3，池茂儒3. 基于模态法的高速列车车体关键位置应力谱及寿命评估研究[J]. 振动与冲击, 2022, 41(23): 10-18.
LI Chuanying1, WANG Xiugang1, WU Xingwen2, DONG Xiaohua3, CHI Maoru3. Stress spectra and life estimation of key positions of high-speed train car body based on modal method. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(23): 10-18.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I23/10

[1] BS EN 12663-1:2010+A1:2014 Railway applications—Structural requirements of railway vehicle bodies. Part 1: Locomotives and passenger rolling stock (and alternative method for freight wagons).
[2] 王艳丽,陈刚,谭富星. 欧盟标准BS EN 12663-1的应用研究[J].城市轨道交通研究,2019,22(02):117-119.
WANG Yanli，CHEN Gang，TAN Fuxing. Applications of EU Standard BS EN 126631 in Railway Vehicle Bodies[J]. Urban Mass Transit, 2019,22(02):117-119.
[3] 张金. CRH5型动车组车体异常抖动原因分析及对策[J].铁道建筑,2019,59(09):126-130.
ZHANG Jin. Cause Analysis and Countermeasures of Exceptional Jitter of Car Body of CRH5 EMU[J]. Railway Engineering, 2019,22(02):117-119.
[4] 龚继军,孙建峰,王军平,等.成贵客专动车组异常抖动原因分析及治理[J].中国铁路,2020(02):70-75.
GONG Jijun, SUN Jianfeng, WANG Junping, ZHONG Hao, XU Ximing, TAN Haoyin. Cause Analysis and Treatment of Abnormal Shaking for EMU on Chengdu-Guiyang PDL[J]. CHINA RAILWAY, 2020(02):70-75.
[5] 谭桐. 高速动车组车体异常抖动现象研究分析[D].西南交通大学,2018.
TAN Tong. Research on abnormal shaking problem of carbody for EMU[D]. Master Degree Dissertation. Southwest Jiaotong University, 2018.
[6] 李凡松,王建斌,石怀龙,等.动车组车体异常弹性振动原因及抑制措施研究[J].机械工程学报,2019,55(12):178-188.
LI Fansong WANG Jianbin SHI Huailong WU Pingbo. Research on causes and countermeasures of abnormal flexible vibration of car body for electric multiple units[J]. Journal of Mechanical Engineering, 2019, 55(12): 178-188.
[7] 李凡松. 服役环境下动车组车体振动与疲劳研究[D].西南交通大学,2018.
LI Fansong. Research on vibration and fatigue of carbody for EMU under service environment[D]. Doctor Degree Dissertation, Southwest Jiaotong University, 2018.
[8] 张醒. 随机载荷作用下的高速列车车体振动疲劳分析方法研究[D].西南交通大学,2018.
Research on vibration and fatigue analysis method of high-speed train carbody under random loads[D]. Master Degree Dissertation. Southwest Jiaotong University, 2018.
[9] 王子渊. 单轨车辆铝合金车体振动疲劳研究[D].西南交通大学,2016.
Wang Ziyuan. The study on the vibration fatigue of mon-car body mode of aluminum alloy[D]. Master Degree Dissertation, Southwest Jiaotong University, 2016.
[10] 李仁秋. 车体振动模态对疲劳强度的影响分析[D].华东交通大学,2019.
LI Renqiu. Analysis of the influence of vehicle body vibration mode on fatigue strength[D]. Master Degree Dissertation, East China Jiaotong University, 2019.
[11] 朴明伟,方吉,赵钦旭,.基于刚柔耦合仿真的集装箱车体振动疲劳分析[J].振动与冲击,2009,28(03):1-5+195.
PIAO Ming-wei, FANGJi, ZHAO Qian-xu, ZHAO Wen-zhong. Vibration fatigue analysis of a container flat car based on rigid-flexible coupling simulation[J]. Journal of vibration and shock, 2009,28(03):1-5+195.
[12] 芦旭. 基于刚柔耦合的CRH3车体振动疲劳强度分析[D].大连交通大学,2010.
LU Xu. Vibration fatigue life analysis on Rigid-flexible coupling of CRH3 carbody[D]. Master Degree Dissertation, Dalian Jiaotong University, 2010.
[13] Xingwen Wu, Subhash Rakheja, Sheng Qu, et al. Dynamic responses of a high-speed railway car due to wheel polygonalization[J]. Vehicle System Dynamics, 2018,1-21.
[14] Xingwen Wu, Subhash Rakheja, A.K.W. Ahmed, et al. Influence of a flexible wheelset on the dynamic responses of a high-speed railway car due to a wheel flat[j]. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2018, 232(4), 1033-1048.
[15] 刘永强. 轨道车辆车体晃动机理研究[D].西南交通大学,2019.
LIU Yongqiang. Research on mechanism of vehicle body sloshing[D]. Master Degree Dissertation. Southwest Jiaotong University, 2019.