In this paper, the measured mode shape of a squealing drum brake is presented. The squealing noise is the result of a self-excited vibration that can occur on most types of brakes. In the literature, there are several suggestions for the mechanisms behind the squeal instabilities. Therefore, there is a need for measurements to verify the models. The vibration signals are measured with accelerometers mounted on a drum brake of a heavy duty vehicle. The mode shape is measured in operation, i.e. while the vehicle is running on a test ground.The result from the measurements is the mode shape of a squealing drum brake. The radial and tangential vibration of the drum and the shoes are measured and the accelerometers are distributed both axially and tangentially. The measured shape is a complex mode containing a wave. This wave moves in the same direction as the rotation of the drum.As the drum rotates during the measurement, a Doppler effect influences the measured frequency. Therefore, a method for transforming the drum signal to obtain a correct transfer function has been developed.The measurements give a very good verification tool for analytical models as well as a better understanding of the characteristics of squealing drum brakes.


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    Titel :

    Mode Shape of a Squealing Drum Brake


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Hultén, Johan (Autor:in) / Flint, John (Autor:in) / Nellemose, Thomas (Autor:in)

    Kongress:

    SAE Noise and Vibration Conference and Exposition ; 1997



    Erscheinungsdatum :

    1997-05-20




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Mode Shape of a Squealing Drum Brake

    Hulten, J. / Flint, J. / Nellemose, T. et al. | British Library Conference Proceedings | 1997


    Mode shape of a squealing drum brake

    Hulten,J. / Flint,J. / Nellemose,T. et al. | Kraftfahrwesen | 1997


    Transient Analysis of Squealing Mode Selection in Disc Brake

    Brunel, J.F. / Dufrenoy, P. / Society of Automotive Engineers | British Library Conference Proceedings | 2008


    Transient Analysis of Squealing Mode Selection in Disc Brake

    Brunel, J. F. / Dufrénoy, P. | SAE Technical Papers | 2008


    Research into the possible causes of squealing brake-drums

    Bombek, Gorazd / Pevec, Miha / Vranesevic, Darko | Tema Archiv | 2014