Computing contact forces is rather quick if rigid profiles are used but the results are numerically uncertain because of discontinuities in contact locations. Using elastic profiles is physically correct but gives rise to new difficulties to locate multi contacts (2 or 3 at the same time on the same wheel) and implication of high frequency modes due to wheel and rail separation through high stiffnesses.

    This paper presents a method to avoid discontinuities calculating the contact forces of one wheelset using a rigid profile process associated to a limited number of equivalent parameters, as functions of the lateral wheelset relative displacement “y”. These parameters are precomputed once for all using a time consuming elastic multicontact program associated with an identification process. Comparisons between forces calculated by this quick new method and the slow complex code are good.


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    Titel :

    NEW METHOD FOR REDUCING THE MULTICONTACT WHEEL/RAIL PROBLEM TO ONE EQUIVALENT CONTACT PATCH


    Beteiligte:
    Pascal, J. P. (Autor:in) / Sauvage, G. (Autor:in)

    Erschienen in:

    Vehicle System Dynamics ; 20 , sup1 ; 475-489


    Erscheinungsdatum :

    1992-01-01


    Format / Umfang :

    15 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt



    New method for reducing the multicontact wheel/rail problem to one equivalent contact patch

    Pascal,J.P. / Sauvage,G. / Inst.National de Recherche sur les Transports et leurs Securite,INRETS,FR | Kraftfahrwesen | 1992


    Experimental characterization of wheel-rail contact patch evolution

    Marshall, M.B. / Lewis, R. / Dwyer-Joyce, R.S. et al. | Tema Archiv | 2006




    Determination of the wheel rail contact patch in semi-Hertzian conditions

    Ayasse, JB / Chollet, H | Taylor & Francis Verlag | 2005