Title: A prediction methodology of disk brake squeal using complex eigenvalue analysis

Authors: Abd Rahim AbuBakar, Huajiang Ouyang

Addresses: Department of Aeronautical and Automotive, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia. ' Department of Engineering, The University of Liverpool, The Quadrangle, Liverpool L69 3GH, UK

Abstract: This paper presents a methodology for predicting disk brake squeal using the Finite Element (FE) method whereby a three-dimensional FE model of a real disk brake is validated at the component and assembly levels, and more importantly through contact analysis. Consideration of real surface topography of the friction material in the contact interface model represents a major advancement. Kinetic friction coefficients are determined from squeal tests. Two different friction characteristics with friction damping are simulated. The predicted results show that the refined contact interface model can improve accuracy of prediction and also reduce the number of redundant unstable frequencies.

Keywords: disk brakes; refined contact interface; macroscopic; friction damping; complex eigenvalue; brake squeal; squeal prediction; vehicle noise; vehicle design; vehicle braking; finite element method; FEM; surface topography; kinetic friction coefficients; redundant unstable frequencies.

DOI: 10.1504/IJVD.2008.020307

International Journal of Vehicle Design, 2008 Vol.46 No.4, pp.416 - 435

Available online: 15 Sep 2008 *

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