Curve squealing of railway wheels occurs erratically in tight curves with a frequency of about 4 kHz. Squealing is caused by a self-excited stick-slip oscillation in the wheel-rail contact. The mechanism which activates squeal is still unexplained and will be analysed in the paper at hand. By starting with a modal model of the elastic wheel equipped with a three-dimensional hard Coulomb contact, a stability analysis of the stationary run through a curve is performed for the four wheels of the investigated bogie. The results show that in particular the front inner wheel tends to squeal. A numerical simulation performed on the unstable states shows the existence of a self-excited stick-slip oscillation with a frequency that compares well with the ones measured at squeal.


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    Title :

    Measurement, modelling and simulation of curve squealing of trains


    Contributors:


    Publication date :

    2010


    Size :

    13 Seiten, 9 Bilder, 1 Tabelle, 7 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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