Design oriented simulation of contact-friction instabilities in application to realistic brake assemblies

Guillaume Vermot Des Roches (1) , Etienne Balmès (2) , R. Lemaire (3) , T. Pasquet (4)

1 SDTools
2 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux
3 bosch -Chassis System Brakes
4 Bosch (Chassis System Brakes)

This paper presents advances in non-linear simulations for systems with contact-friction, with an application to brake squeal. A method is proposed to orient component structural modifications from brake assembly simulations in the frequency and time domains. A reduction method implementing explicitly component-wise degrees of freedom at the system level allows quick parametric analyses giving modification clues. The effect of the modification is then validated in the time domain where non-linearities can be fully considered. A reduction method adapted for models showing local non-linearities is purposely presented along with an optimization of a modified non linear Newmark scheme to make such computation possible for industrial models. The paper then illustrates the importance of structural effects in brake squeal, and suggests solutions.

Mots clés: Brake squeal; Reduction; Component mode; Time simulation; Instability; Contact-friction

Domaines: Vibrations [physics.class-ph]; Vibrations [physics.class-ph]

Guillaume Vermot Des Roches, Etienne Balmès, R. Lemaire, T. Pasquet. Design oriented simulation of contact-friction instabilities in application to realistic brake assemblies. 6th European conference on braking (Lille, France, 24-25 novembre 2010), Nov 2010, France. pp.1-8. ⟨hal-00987498⟩