地铁车辆扫石机故障调查及动力子结构分析方法

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-04-08 DOI:10.1016/j.engfailanal.2025.109593

Yang Liu , Jinbao Huang , Ming Zhang , Wenbiao Huo , Xingwen Wu , Zefeng Wen , Yang Luo , Zheng Guan , Zihao Chen

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引用次数: 0

摘要

扫石机是轨道车辆重要的安全设备。针对地铁车辆扫石机的振动疲劳问题，通过车辆系统试验和理论分析，阐述了其失效的根本原因。基于刚柔耦合理论，提出了子结构的多轴随机振动模型。基于该模型，验证并再现了车辆在使用环境中的振动状态和动应力状态。在此基础上，提出了一种多条件并行计算的PCP-MRV方法。利用该方法，对扫石机的薄弱部位进行了识别。并对关键部位的损伤和疲劳寿命进行了计算。结果表明，扫石机安装底座和螺栓连接区域的损伤和等效应力不满足360万km的设计寿命要求。最后，对扫石机的失效机理进行了分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Investigation on the failure of metro vehicle stone sweeper and dynamic sub-structure analysis method

Stone sweeper is an important security device for rail vehicles. For the vibration fatigue problem of stone sweepers in metro vehicles, the root cause of their failure is illustrated through vehicle system tests and theoretical analyses. Based on the rigid-flexible coupling theory, a multi-axis random vibration (MRV) model of the substructure is proposed. Based on this model, the vibration and dynamic stress states in service environment are verified and reproduced. Furthermore, a PCP-MRV method is proposed for parallel computation of multi-conditions. Utilizing this method, the weak position of the stone sweeper is identified. Moreover, the damage and fatigue life of critical locations are calculated. The results show that the damage and equivalent stresses in the stone sweeper’s mounting base and bolt connection area do not meet the design life requirement of 3.6 million km. Finally, the failure mechanism of the stone sweeper was explained.

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来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.