Transient friction-induced vibrations in a 2-DOF model of brakes

Non-stationary effects in the friction-induced dynamics of a two-degree-of-freedom brake model are examined in this paper. The belt–spring–block model is designed to take into account variations of the normal load during the braking process. It is shown that due to the adiabatically slowing down vel...

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Bibliographic Details
Published in:Journal of sound and vibration 2015-05, Vol.344, p.297-312
Main Authors: Pilipchuk, Valery, Olejnik, Paweł, Awrejcewicz, Jan
Format: Article
Language:English
Subjects:
Belts
Brakes
Braking
Dynamical systems
Dynamics
Retarding
Vibration
Widening
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Summary:Non-stationary effects in the friction-induced dynamics of a two-degree-of-freedom brake model are examined in this paper. The belt–spring–block model is designed to take into account variations of the normal load during the braking process. It is shown that due to the adiabatically slowing down velocity of the belt, the system response experiences specific qualitative transitions that can be viewed as simple mechanical indicators for the onset of squeal phenomenon. In particular, the creep-slip leading to a significant widening of the spectrum of the dynamics is observed at the final phase of the process. •Variations of the normal load during the braking process.•The 2-DOF system response experiences specific qualitative transitions that can be viewed as simple mechanical indicators for the onset of squeal phenomenon.•A creep-slip phenomenon leading to a significant widening of the spectrum of the dynamics is presented on many interesting plots.•An experimental proof of transient effects in friction-induced vibrations is revealed in a theoretical analysis.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2015.01.028