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http://dx.doi.org/10.5050/KSNVN.2006.16.8.886

The Origin and Effect of Hot Spot Phenomena on Judder Vibration in Automotive Disk Brake  

Cho, Chong-Du (인하대학교 기계공학과)
Kim, Myoung-Gu (인하대학교 기계공학과)
Cho, Ho-Joon (인하대학교 기계공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.16, no.8, 2006 , pp. 886-892 More about this Journal
Abstract
Hot spot phenomenon is caused by non-uniform contact area between brake pad and disk frequent braking. Brake disk deformed by locally concentrated heat increases magnitude of frictional vibration. And this deformation can highly influence the judder vibration. In this experimental study, vibration and hot spot was measured in accordance with rotation of disk and pressure of master cylinder for finding the factors that causes hot spot phenomena. For comparing hot spot aspects with mode shapes of disk, mode shapes were measured by conducting modal test, and analyzed by using finite element analysis. Relation between hot spot phenomenon, and mode shape, pressure of master cylinder and rotation speed of disk respectively, was achieved by hot spot measurement and frequency analysis.
Keywords
Hot Spot; Judder Vibration; Mode Shapes; Finite Element Analysis; Frequency Analysis;
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