This paper presents a model simulating rail roughness growth in which the interaction of a wheelset with the track is considered. The aim is to investigate any possible mechanism for roughness growth due to the coupling between the vertical dynamics, the torsional vibration across the axle of the wheelset and the non-steady contact mechanics. The time-domain simulations are carried out for a driven wheelset on tangent track. Both rigid and flexible are considered with parameter variations for moments of the wheelset, vehicle speeds and wavelengths of initial roughnesses. The 2D non-Hertzian and non-steady contact model used in simulations are based on influence coefficients obtained from a boundary element model. The nonlinear development of the rail roughnesses after millions of wheelset passages is also presented.


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    Titel :

    A rail roughness growth model for a wheelset with non-steady, non-Hertzian contact


    Weitere Titelangaben:

    Modell zur Berechnung der Zunahme der Schienenrauheit bei einem Radsatz mit instationärem Nicht-Hertzschem-Kontakt


    Beteiligte:
    Xie, G. (Autor:in) / Iwnicki, S.D. (Autor:in)

    Erschienen in:

    Vehicle System Dynamics ; 48 , 10 ; 1135-1154


    Erscheinungsdatum :

    2010


    Format / Umfang :

    20 Seiten, 20 Bilder, 15 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch