Brake squeal analysis by coupling spectral linearization and modal identification methods

P. Grange (1) , D. Clair (1) , L. Baillet (2) , Michel Fogli (1)

1 Laboratory of Research and Applications in Advanced Mechanics, French Institute of Advanced Mechanics and Blaise Pascal University
2 LGIT - Laboratoire de Géophysique Interne et Tectonophysique

Brake squeal is induced by self-excited vibrations, consequences of local nonlinearities at the contact interface. This paper deals with a new way to analyze the brake squeal behavior. The proposed method is based on a spectral linearization of the brake nonlinear dynamic response with unilateral contact and friction conditions. The approach enables to identify modal parameters of an equivalent linear system by a combination of the random decrement technique and the Ibrahim time domain method. It is applied to the analysis of a pad/beam squealing contact. The obtained results are compared to the classical complex eigenvalues analysis and nonlinear temporal dynamic finite element analysis ones.

Keywords: Squeal; Modal identification; Random decrement technique; Ibrahim time domain method; Complex eigenvalues analysis; Nonlinear temporal dynamic finite element; analysis

P. Grange, D. Clair, L. Baillet, Michel Fogli. Brake squeal analysis by coupling spectral linearization and modal identification methods. Mechanical Systems and Signal Processing, 2009, 23 (8), pp.2575-2589. ⟨10.1016/j.ymssp.2009.05.004⟩. ⟨insu-00447190⟩