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디스크 브레이크 마찰표면의 적열점에 관한 수치적 연구Numerical Study on the Hot Spots of Friction Surface in Disk Brakes
- Other Titles
- Numerical Study on the Hot Spots of Friction Surface in Disk Brakes
- Issue Date
- 2004
- Publisher
- 대한기계학회
- Keywords
- Hot Spot(적열점); Thermal Distortion(열변형); Thermoelastic Wear(열탄성 마멸); Friction(마찰); Wear(마멸); Hot Spot(적열점); Thermal Distortion(열변형); Thermoelastic Wear(열탄성 마멸); Friction(마찰); Wear(마멸)
- Citation
- 대한기계학회논문집 A, v.28, no.11, pp.1692 - 1696
- Journal Title
- 대한기계학회논문집 A
- Volume
- 28
- Number
- 11
- Start Page
- 1692
- End Page
- 1696
- ISSN
- 1226-4873
- 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.
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