International Journal of Automotive Technology

The Korean Society of Automotive Engineers (한국자동차공학회)
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CRITICAL SPEED ANALYSIS OF JUDDERING DUE TO CHANGE IN SURFACE TEMPERATURE OF DISK BRAKE

  • Kim, M.G. (Department of Mechanical Engineering, Inha University) ;
  • Cho, C. (Department of Mechanical Engineering, Inha University)
  • Published : 2006.10.01
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Abstract

The change in the critical speed due to surface temperature of automotive disk brakes may be analyzed both theoretically as well as experimentally. Juddering of disk brakes is closely related to its critical speed. In analyzing the critical speed, if $\sigma$ is positive, Disk develops TEI(Thermo-Elastic Instability) resulting in juddering in disk brakes. And $\sigma$ is affected not only by the critical speed but also by the initial temperature of disk surface. As the initial temperature of the disk surface rises, the critical speed decreases and juddering is developed more easily. Also, when hot spots are developed by TEI, they show large temperature difference in small local range.

Keywords

References

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