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Brake Judder Analysis: Case Studies
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English
Abstract
This paper presents new analysis methods for brake judder data. First, a distinction is made between Thickness Variation, TV, judder (shudder or roughness) caused by the geometry variation of the brake rotor, and thermal judder caused by thermal caused changes to the friction couple. Spectrograms of vibration signals are used to distinguish between the two types of judder. Instrumentation of vehicles in order to get significant data is also provided. A linear model is used to describe the mechanism of judder generation. Different case studies are provided. Special tools of analysis like spectrograms, power time and spectral densities, and zero crossing frequency estimates are applied to real data.
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Authors
Citation
Abdelhamid, M., "Brake Judder Analysis: Case Studies," SAE Technical Paper 972027, 1997, https://doi.org/10.4271/972027.Also In
References
- Lang, A. Smales H. “An Approach to the Solution of Disc Brake Vibration Problems,” Imech E 1983 223 231
- Abdelhamid, M. K. “Judder: Diagnosis and Prevention,” 14th International Modal Analysis Conference Dearborn, MI 1996 166 171
- de Vries Alexander Wagner Mark “The Brake Judder Phenomenon,” SAE paper 920554