The generation of forces in contact area between wheel and rail due to roughness is an inherently non-linear process. In order to provide an excitation input to existing linear analytical models of wheel/rail noise, two alternate calculation procedures have been examined for estimating these interaction forces, the distributed point reacting spring (DPRS) procedure and the Boussinesq procedure. Both procedures are based on estimating the blocked force produced by roughness. The blocked force can then be used in the linear wheel/rail ananlytical models to calculate wheel and rail response and sound radiation. The DPRS procedure is substantially more computationally efficient than the Boussinesq and is found to provide similar estimates of the normal stress distribution in the contact zone for roughness wavelengths that are long compared to the contact area dimensions. On the other hand, the two procedures provide quite different estimates of the normal stress distribution in the contact zone when the roughness wavelenghts are short compared to the dimensions of the contact area. When the two models are used to estimate the blocked interaction force between the wheel and rail for measured wheel and rail two-dimensional roughness distributions, however, the blocked force predictions are very similar even for wavelengths that are the order of or slightly shorter than the dimensions of the contact area.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Estimation of wheel/rail interaction forces in the contact area due to roughness


    Weitere Titelangaben:

    Bestimmung von Wechselwirkungkräften bei der Berührungsfläche von Rad und Schiene infolge von Rauhigkeit


    Beteiligte:
    Remington, P. (Autor:in) / Webb, J. (Autor:in)


    Erscheinungsdatum :

    1996


    Format / Umfang :

    20 Seiten, 21 Bilder, 4 Tabellen, 10 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Reducing Wheel-Rail Interaction Forces and Roughness Growth by Application of Rail Dampers

    Croft, B. E. / Jones, C. J. C. / Thompson, D. J. | Springer Verlag | 2008


    Reducing wheel-rail interaction forces and roughness growth by application of rail dampers

    Croft, B.E. / Jones, C.J.C. / Thompson, D.J. | Tema Archiv | 2008


    Reducing Wheel-Rail Interaction Forces and Roughness Growth by Application of Rail Dampers

    Croft, B.E. / Jones, C.J.C. / Thompson, D.J. | British Library Conference Proceedings | 2008


    Peculiarities of traction forces in wheel/rail contact area

    Gintautas Bureika / Šarūnas Mikaliūnas | DOAJ | 2002

    Freier Zugriff