Title: A combined analysis of heat conduction, contact pressure and transient vibration of a disk brake

Authors: Huajiang Ouyang, Abd Rahim Abu-Bakar, Lijie Li

Addresses: Department of Engineering, University of Liverpool, Harrison Hughes Building, The Quadrangle, Liverpool L69 3GH, UK. ' Department of Automotive Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia. ' ABB Engineering Service, Integrity Management, Daresbury Park, Warrington WA4 4BT, UK

Abstract: This paper studies car disc brake squeal by transient analysis and details the first attempt to combine heat conduction analysis, contact analysis and transient analysis of disc brake squeal. The contact pressure at the disc/pads interface is first computed, and the information is used to define friction-induced heat flux. Its resultant heat conduction is then analysed. Finally, transient analysis is performed, considering the influence on squeal generation of contact pressure distribution affected by brake pad surface roughness and thermal deformation. A noticeable difference is found between the dynamic responses obtained with the thermal effect from those without the thermal effect.

Keywords: disk brake squeal; thermal effect; transient analysis; FEM; finite element method; vehicle braking; vehicle design; heat conduction; contact pressure; transient vibration; brake pads; surface roughness; thermal deformation.

DOI: 10.1504/IJVD.2009.027121

International Journal of Vehicle Design, 2009 Vol.51 No.1/2, pp.190 - 206

Published online: 15 Jul 2009 *

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