Brake squeal is uncomfortable noise that occurs while braking. So, it is an important issue of automobile quality to reduce the brake squeal occurrence. Although many researchers had reported about brake squeal, there are many examples that have not been understood well.For those squeals, some of occurrence mechanisms are assumed. The dµ/dv<0 theory is one of them, and the dµ/dv represents a slope of friction coefficient for sliding velocity. If the frictional force has a negative damping characteristic, that is dµ/dv<0, disc vibration may increase. It has been said for a long time that a negative dµ/dv characteristic affects brake squeal occurrence.Many researchers had measured the dµ/dv to clarify brake squeal factors. In those results, the slope of friction coefficient at steady sliding speed was used for the dµ/dv. However, the pad undergoes minute vibrations while the brake is squealing. So, we developed a device that can measure the friction coefficient with minute vibrating velocity. A piezo-actuator and a dynamic load sensor are used to measure the friction coefficient at minute vibrating velocity.The results say that dµ/dv at the minute vibrating velocity differs from that at the steady sliding speed. And, the results also showed that dµ/dv at the minute vibrating velocity tended to increase for actuating frequency, and tended to slightly decrease for thrust load.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Friction Coefficient Variation at Minute Vibrating Velocity between Brake Pad and Disc Rotor


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Oura, Yasunori (Autor:in) / Nishizawa, Yukio (Autor:in) / Aoki, Yusuke (Autor:in) / Kurita, Yutaka (Autor:in)

    Kongress:

    SAE 2013 Brake Colloquium & Exhibition - 31st Annual ; 2013



    Erscheinungsdatum :

    2013-09-30




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Friction Coefficient Variation at Minute Vibrating Velocity between Brake Pad and Disc Rotor

    Aoki, Y. / Nishizawa, Y. / Kurita, Y. et al. | British Library Conference Proceedings | 2013


    Friction Damped Disc Brake Rotor

    Lowe, Brent / Riefe, Mark / Dessouki, Omar | SAE Technical Papers | 2010


    Friction damped disc brake rotor

    Dessouki,O. / Lowe,B. / Riefe,M. et al. | Kraftfahrwesen | 2010


    2010-01-0077 Friction Damped Disc Brake Rotor

    Dessouki, O. / Lowe, B. / Riefe, M. et al. | British Library Conference Proceedings | 2010


    Disc brake rotor

    KUWAYAMA KAZUYA / HOSOMI YUSUKE / NOMA NATSUKI | Europäisches Patentamt | 2020

    Freier Zugriff