This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Influence of Heterogeneous Contact between Disc and Pad on the Brake Squeal Noise
Technical Paper
2011-01-2360
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Brake squeal noise has been under investigation by automotive manufacturers for decades due to consistent customer complaints and high warranty costs. Sound in a squealing brake is excited by the contact between pads and the disc. It is well known that the material friction pad consists of several components making it a heterogeneous material. It is also well known that a part of the wear particles agglomerate at the surface leading to non uniform contact properties. The aim of this paper is to investigate the effect of heterogeneities of the friction material on the dynamic behavior of the brake. For this, an analytical model with three degrees of freedom (a translation and a rotation for the pad and a translation for the disc) has been developed including friction at the disc-pad surface contact surface. This model is computed with a complex modal analysis determining the frequencies of the system which can be coalesced to lead to mode lock-in which may be associated to squeal occurrence. The heterogeneities are introduced in the material properties. The results are compared to uniform material and contact properties, which are generally assumed in the literature. They show clearly that the distribution of these heterogeneities play a key role for the appearance of mode lock-in.
Recommended Content
Authors
Citation
Magnier, V., Brunel, J., Duboc, M., and Dufrenoy, P., "Influence of Heterogeneous Contact between Disc and Pad on the Brake Squeal Noise," SAE Technical Paper 2011-01-2360, 2011, https://doi.org/10.4271/2011-01-2360.Also In
References
- Akay, A. Acoustics of friction J. Acoust. Soc. Am. 2002 1525 1548
- Oden, J.T. Martins, J.A.C. Models and computational methods for dynamic friction phenomena Computer Methods in Applied mechanics and Engineering 52 1985 527 634
- Spurr, R.T. A theory of brake squeal Proc.Inst. Mech. Eng. 1 1961 33 52
- Mills, H.R. Brake squeal Technical report N9000 B 1938 Institution of Automobile Engineers
- North, M.R. Disc brake squeal - a theoretical model Technical Report 1972/5 Motor Industry Research Association Warwickshire, England 1972
- Hoffmann, N. Fischer, M. Allgaier, R. Gaul, L. A minimal model for studying properties of the mode-coupling type instability in friction induced oscillations Mechanics Research Communications 29 2002 197 205
- Oura, Y. Kurita, Y. Matsumura, Y. Nishizawa, Y. “Influence of Distributed Stiffness in Contact Surface on Disc Brake Squeal,” SAE Technical Paper 2008-01-2584 2008 10.4271/2008-01-2584
- Duboc, M. Magnier, V. Brunel, J.F. Dufrénoy, P. Rejdych, G. Chancelier, T. Influence of contact conditions and pad geometry on disc brake squeal noise JEF2010 2010
- Duboc, M. Brunel, J.F. Dufrénoy, P. Influence des conditions de contact et de la géométrie sur les occurrences de crissement 17th symposium Vibrations, Shocks and Noise Lyon 2010