To study the dynamic response of railway ballast excited by forces from the moving train at different speeds, a finite element model of track is developed. The rail is represented by a Timoshenko beam on discrete pad-sleeper-ballast supports. The ballast is considered as a three-dimensional finite element model. Wheel/rail irregularities and moving loads are taken into account. The displacement, acceleration and dynamic stress at different parts of the ballast are calculated. Vibration propagation is also presented. The responses of ballast, for constant loads and travelling at constant speeds over track with and without irregularity, are studied. It is shown that, at high speeds, stone may be projected out of the ballast bed.


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    Titel :

    The Dynamic Response of Railway Ballast to the Action of Trains Moving at Different Speeds


    Beteiligte:
    Luo, Y (Autor:in) / Yin, H (Autor:in) / Hua, C (Autor:in)


    Erscheinungsdatum :

    1996-07-01


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    The dynamic response of railway ballast to the action of trains moving at different speeds

    Luo, Y. / Yin, H. / Hua, C. | British Library Online Contents | 1996


    Railway ballast requirements

    Stimson, F.J. | Engineering Index Backfile | 1926


    `Flat maintaining' speeds trains

    Engineering Index Backfile | 1957