A novel wheel wear indicator in regard to wheel-rail contact parameters and vehicle hunting stability

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2024-10-10 DOI:10.1016/j.engfailanal.2024.108967

Hongxing Gao , Jianfeng Sun , Xiaohao Chen , Weidong Jiao , Maoru Chi , Yonghua Jiang , Wanxiu Xu , Xuesong Jin

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引用次数: 0

Abstract

It is well known that the abnormal equivalent conicity caused by wheel and rail wear is the main root of hunting instability, but it is still difficult to trace the underlying factor when the dynamic instability occurs, that is, wheel wear induced, rail wear induced or both. To face this challenge problem, this paper constructed a novel wheel wear indicator based on the moved wear area difference. The long-term tracking test data of different wheel profiles were used to analyze the correlation between the wear indicators and the wheel-rail contact parameters. A fully detailed dynamic model of one typical high-speed railway vehicle was developed to investigate the evolution of vehicle hunting stability under the variation of the proposed wear indicator. The results indicate that the proposed wear indicator based on the moved wear area difference has a strong correlation with the equivalent conicity and can be used for the estimation of wheel-rail contact conditions. Furthermore, the hunting stability and the instability form is closely related to the value of the proposed wheel wear indicator, which is helpful to trace the underlying factor of hunting instability, thereby supporting intelligent operation and maintenance of railway vehicles.

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关于轮轨接触参数和车辆行驶稳定性的新型车轮磨损指示器

众所周知，由车轮和钢轨磨损引起的等效圆锥度异常是造成打猎不稳定的主要根源，但仍难以追溯动态不稳定发生时的根本因素，即车轮磨损诱发、钢轨磨损诱发或两者兼而有之。面对这一难题，本文构建了一种基于移动磨损面积差的新型车轮磨损指标。利用不同轮廓的长期跟踪测试数据，分析了磨损指标与轮轨接触参数之间的相关性。建立了一个典型高速铁路车辆的完整详细动态模型，以研究在所提出的磨损指标变化下车辆狩猎稳定性的演变。结果表明，基于移动磨损面积差的磨损指标与等效圆锥度具有很强的相关性，可用于估计轮轨接触状况。此外，打猎稳定性和不稳定形式与所提出的车轮磨损指标值密切相关，有助于追溯打猎不稳定的内在因素，从而为铁路车辆的智能化运营和维护提供支持。

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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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.