The self-excited vibration of wheel–rail friction-induced is a kind of unstable motion mode of wheel–rail stick-slip contact, and the stability of which has an important impact on the wheel–rail contact behavior. A three-dimensional finite element model (FEM) of the wheel–rail system is established, and the unstable frequency and friction-induced self-excited vibration (FISEV) form of the wheel–rail system are investigated using complex eigenvalue analysis. The influence of rail fastener stiffness and damping parameters on FISEV characteristics is explored. The research results show that: (1) Increasing fastener stiffness will change the frequency of FISEV and reduce its non-stability likelihood. When increased to a certain extent, it will also reduce the number of unstable frequencies in the wheel–rail system, but it will not change the form of FISEV. The lower the vertical stiffness of rail fasteners, the lower the stability of wheel–rail self-excited vibration, which in turn intensifies the interaction between the wheel and rail, resulting in the occurrence of rail corrugation or curve squeal noise. (2) Within the typical range of damping coefficients of rail fasteners for urban rail transit, with the increase of the vertical damping coefficient, the frequency of FISEV is slightly reduced and the stability of the wheel–rail system is not affected significantly. The lateral damping coefficient has no impact on the FISEV characteristics of the wheel–rail system.


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    Title :

    Parameter Influence of the Fastener on the Wheel–Rail Friction-Induced Self-Excited Vibration under Metro Curved Track


    Contributors:
    Zhang, Zhongjie (author) / Yang, Xinwen (author) / Xiang, Kaiwen (author) / Zhao, Zhijun (author) / Miao, Caixia (author) / Cui, Yipeng (author)

    Conference:

    Third International Conference on Rail Transportation ; 2024 ; Shanghai, China


    Published in:

    ICRT 2024 ; 444-453


    Publication date :

    2025-03-18




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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