Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Influence of Material-Dependent Damping on Brake Squeal in the Specific Disc Brake System

Version 1 : Received: 2 February 2021 / Approved: 3 February 2021 / Online: 3 February 2021 (10:41:34 CET)

How to cite: Úradníček, J.; Musil, M.; Gašparovič, Ľ.; Bachratý, M. Influence of Material-Dependent Damping on Brake Squeal in the Specific Disc Brake System. Preprints 2021, 2021020114 (doi: 10.20944/preprints202102.0114.v1). Úradníček, J.; Musil, M.; Gašparovič, Ľ.; Bachratý, M. Influence of Material-Dependent Damping on Brake Squeal in the Specific Disc Brake System. Preprints 2021, 2021020114 (doi: 10.20944/preprints202102.0114.v1).

Abstract

The connection of two phenomena - non-conservative friction forces and dissipation-induced instability can lead to many interesting engineering problems. The paper studies general material-dependent damping influence on dynamical instability of disc brake systems leading to brake squeal. The effect of general damping is demonstrated on a minimal and complex model of a disc brake. A complex system including material-dependent damping is defined in the commercial finite element software. The finite element model validated by experimental data on the brake-disc test bench is used to compute the influence of a pad and a disc damping variations on system stability by complex eigenvalue analysis. Analyzes show a significant sensitivity of the experimentally verified unstable mode of the system to the ratio of the damping between the disc and the friction material components.

Subject Areas

brake squeal; dissipation induced instability; non-proportional damping; non-conservative system; complex eigen value analysis

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