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Noise and Vibration Characterisation of Cast Iron and Siliconised Carbon Composite Brake Rotors
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 16, 2005 by SAE International in United States
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This paper reports the results of a back-to-back comparison of the squeal and judder propensity of simple cast iron and siliconised carbon disk brake systems. A finite element simulation approach is used to predict the squeal propensity of the two systems based on the results of a complex eigenvalue analysis. These results which are validated by dynamometer noise tests carried out according to the SAE J2521  standard procedure show that the siliconised carbon rotor is much less prone to squeal over the range of conditions considered. The combined experimental and numerical simulation approach is also applied to the problem of hot judder for the two rotors. The critical rotational speeds for hot spots to form are predicted to be an order of magnitude higher for the siliconised carbon rotor system. These results demonstrate the potential of the new carbon composite rotor material to reduce the occurrence of noise and vibration problems in automotive brakes. The results also demonstrate the applicability and validity of advanced computer simulation techniques in predicting the NVH performance of real brake systems.
CitationIoannidis, P., Barton, D., and Brooks, P., "Noise and Vibration Characterisation of Cast Iron and Siliconised Carbon Composite Brake Rotors," SAE Technical Paper 2005-01-2313, 2005, https://doi.org/10.4271/2005-01-2313.
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