Theoretical results support the opinion that the dynamics of the two-axle freight wagons with UIC (Union Internationale des Chemin de fer) standard suspension can be pretty rough. It is shown that the dynamics depends strongly on the rail inclination. At lower speeds, the rough dynamics is caused by a resonance between the lateral excitation frequency of the wheelsets and the yaw eigenfrequency of the carbody. This was already suggested earlier by Stichel. At speeds closer to the allowed maximum speed of the wagons, a violent flange-to-flange motion sets in. The critical speed for this motion depends in addition to the track parameters on the state of the suspension, new or worn, dry or humid, and on the wagon parameters such as the wheelbase and the yaw and roll moments of inertia of the wagon. Generally the dynamics of the wagons is improved, when they are loaded. The UIC link suspension was introduced mainly in order to improve the curving performance of the wagons. It is therefore premature to judge the suspension only on the results of this work. The results should be supplemented with an equally thorough analysis of the dynamics in curves and of the damage on the track. Hoffmann's program is capable of that.


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    Title :

    The dynamics of European two-axle railway freight wagons with UIC standard suspension


    Contributors:
    Hoffmann, Mark (author) / True, Hans (author)


    Publication date :

    2008


    Size :

    12 Seiten, 18 Bilder, 10 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    The dynamics of European two-axle railway freight wagons with UIC standard suspension

    Hoffmann, Mark / True, Hans | Taylor & Francis Verlag | 2008


    The dynamics of European two-axle railway freight wagons with UIC standard suspension

    Hoffmann,M. / True,H. / Tech.Univ.Denmark,DK | Automotive engineering | 2008


    Dynamics of two-axle railway freight wagons with UIC standard suspension

    Hoffmann, M. / True, H. / International Association for Vehicle System Dynamics | British Library Conference Proceedings | 2006


    Dynamics of two-axle railway freight wagons with UIC standard suspension

    Hoffmann, Mark / True, Hans | Taylor & Francis Verlag | 2006


    Standard railway wagons

    Engineering Index Backfile | 1921