A disc brake generates high frequency squeal at 13 KHz, and cannot be reduced by introducing noise insulators and cutting chamfers at pad ends. A complete close-loop coupling modal synthesis model is built. A series of analytic methods, including complex eigenvalue analysis, substructure modal composition analysis,substructure modal parameter sensitivity analysis and feed-in energy analysis, etc. is utilized to perform a systematic analysis. Substructure modal parameters which are critical to the squeal pro...
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