Title: Study of the nonlinear stationary dynamic of single and multi-instabilities for disk brake squeal

Authors: Jean-Jacques Sinou, Nicolas Coudeyras, Samuel Nacivet

Addresses: Laboratoire de Tribologie et Dynamique des Systemes UMR CNRS 5513, Ecole Centrale de Lyon, 36 avenue Guy de Collongue, 69134 Ecully cedex, France. ' Laboratoire de Tribologie et Dynamique des Systemes UMR CNRS 5513, Ecole Centrale de Lyon, 36 avenue Guy de Collongue, 69134 Ecully cedex, France; PSA Peugeot Citroen, 18 rue des Fauvelles, 92250 La Garenne Colombes, France. ' PSA Peugeot Citroen, 18 rue des Fauvelles, 92250 La Garenne Colombes, France

Abstract: The focus of this paper is to show and discuss the nonlinear dynamical behaviours of brake system subjected to friction-induced vibration that can be generated due to the co-existence of multi-unstable modes. A finite element model with friction coupling is used to analyse the stability of the brake system and the stationary nonlinear oscillations for squeal noise prediction. The mechanism of squeal instability considers a mode coupling phenomenon that is classically referred to as coalescence.

Keywords: disk brake squeal; self-excited vibrations; periodic oscillations; quasi-periodic oscillations; nonlinear behaviour; harmonic components; vehicle braking; vehicle design; finite element method; FEM; modelling; friction coupling; instability; mode coupling; coalescence.

DOI: 10.1504/IJVD.2009.027122

International Journal of Vehicle Design, 2009 Vol.51 No.1/2, pp.207 - 222

Published online: 15 Jul 2009 *

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