To accurately and efficiently investigate the influence of the viscoelastic-plastic dynamic properties of rail pads on curved rail vibration characteristics, a spatial model of an infinitely curved track was developed by combining the spectral element method (SEM) and symplectic method (SM). Specifically, a fractional derivative Zener model combined with a Berg friction model was used to describe the dynamic properties of the rail pad. Subsequently, the curved rail mobility and decay rate (DR) were analyzed by accounting for the frequency, preload, and amplitude dependence of the rail pad. In conclusion, the frequency dependence mainly influenced the low- and medium-frequency vibrations of the curved rail and made the vibration within this range to shift to higher frequencies. In terms of the curved rail DRs of different degrees of freedom, because of their coupling effects, the wave modes were converted mutually at the cross frequency of their DR curves, and the torsional (axial) wave had the maximum (minimum) DR. The preload dependence had a significant effect on the vertical and torsional vibrations of the curved rail. As the preload increased, the cut-on frequencies of the first vertical and torsional waves increased; consequently, the curved rail vibrations were transmitted more in the downward.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Effect of viscoelastic-plastic dynamic properties of rail pads on curved rail dynamic characteristics based on the modified SEM–SM hybrid method


    Beteiligte:
    Dou, Yinling (Autor:in) / Wang, Ping (Autor:in) / Ding, Wenhao (Autor:in) / Wang, Shaohua (Autor:in) / Wei, Kai (Autor:in)

    Erschienen in:

    Vehicle System Dynamics ; 61 , 1 ; 58-82


    Erscheinungsdatum :

    2023-01-02


    Format / Umfang :

    25 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt





    Plastic deformation of curved rail at rail weld caused by train-track dynamic interaction

    Li, Wei / Xiao, Guangwen / Wen, Zefeng et al. | Tema Archiv | 2011



    Aspects of Resilient Rail Pads

    Maree, J. S. | British Library Conference Proceedings


    Dynamic vehicle-track interaction and plastic deformation of rail at rail welds

    Wen, Zefeng / Xiao, Guangwen / Xiao, Xinbiao et al. | Tema Archiv | 2009