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http://dx.doi.org/10.3795/KSME-A.2004.28.11.1692

Numerical Study on the Hot Spots of Friction Surface in Disk Brakes  

Kim, Chung-Kyun (홍익대학교 트라이볼로지 연구센터)
Cho, Seung-Hyun (홍익대 기계 시스템디자인 공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.28, no.11, 2004 , pp. 1692-1696 More about this Journal
Abstract
This paper presents the thermally induced hot spot characteristics of rubbing surface in the friction pad disk brake. During the braking period, the rubbing surface with irregular asperities that are strongly engaged in rough surface, wear, and deformed surface due to a friction heating may produce an irregular distorted geometry of the disk surface. The tribological interactions between the disk and the pads are unstable if the contact stress is severe, in which the irregularity develops the contact pressure distribution, leading eventually to localized contact, high temperature and formation of hot spots. The computed results of contact spots that are simulated using a coupled thermal-mechanical analysis present sinusoidal distortions and localized extrusions of the disk surface, which are strongly related to a hot spot in the practical disk brake.
Keywords
Hot Spot; Thermal Distortion; Thermoelastic Wear; Friction; Wear;
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