The vertical wheel-rail impact response induced by a wheel flat under thermo-mechanical loading was investigated numerically based on a 3-D wheel-rail rolling contact model. Thermal stress distributions of the wheel and rail generated by the frictional heating during the wheel-rail slip were firstly simulated, and then the corresponding results were inputted into the finite element model of LS-DYNA/explicit code as an initial pre-stress, to investigate the wheel-rail impact response. Influences of five train speeds, three flat lengths and five axle loads were discussed. The results show that the maximum thermal stresses are occurred on the tread of the wheel and the top face of the rail, respectively. The thermal loading has been demonstrated to contribute to weaken the maximum vertical impact force, maximum von-Mises equivalent stress, and the resistance to plastic deformation. Besides, the wheel-rail impact responses induced by a wheel flat under thermo- mechanical loading are sensitive to the train speed, flat length, and axle load.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Flat-Induced Wheel-Rail Impact Response under Thermo-Mechanical Loading


    Beteiligte:
    Han, Liangliang (Autor:in) / Jing, Lin (Autor:in)

    Kongress:

    First International Conference on Rail Transportation 2017 ; 2017 ; Chengdu, Sichuan Province, China


    Erschienen in:

    ICRT 2017 ; 476-487


    Erscheinungsdatum :

    13.03.2018




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Thermo-mechanical finite element analysis of a rail wheel

    Ramanan, L. / Kumar, R.K. / Sriraman, R. | Tema Archiv | 1999


    A dynamic wheel–rail impact analysis of railway track under wheel flat by finite element analysis

    Bian, Jian / Gu, Yuantong / Murray, Martin Howard | Tema Archiv | 2013


    Effect of wheel flat on dynamic wheel-rail impact in railway turnouts

    Xu, Jingmang / Ma, Qiantao / Zhao, Siqi et al. | Taylor & Francis Verlag | 2022


    Probability of instant rail break induced by wheel–rail impact loading using field test data

    Nielsen, Jens CO / Abrahamsson, Thomas JS / Ekberg, Anders | Taylor & Francis Verlag | 2022

    Freier Zugriff