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| Improvement of brake squeal of a disc brake based on complex eigenvalue analysis |
| ZHAN Bin, SUN Tao, SHEN Yanwu, YU Jiahao， TAO Zheng, HU Haoju |
| Automotive Engineering Institute, Guangzhou Automobile Group Co., Ltd., Guangzhou 511434, China |
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Abstract This paper is focused on investigating the brake squeal problem of a disc brake at 2000 Hz. To this end, a FEA model is established and modified according to the experimental modal. The technique of complex eigenvalue analysis is adopted to retrieve the complex eigenvalues and mode shapes. The unstable mode shapes corresponding to the squeal frequency can be confirmed according to the ODS test. Afterwards,the components contribution of this unstable mode is quantified by means of correlation analysis. The component which has the largest contribution to the unstable mode will be optimized in terms of geometry to improve the brake squeal problem. Finally, this feasibility of this approach can be confirmed through the comparison with bench test of SAE J2521.
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Received: 18 July 2019
Published: 15 March 2021
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