Stability analysis of drum brake based on interval parameters
To suppress brake squeal,a stability and reliability analysis of drum brake with interval uncer-tainty parameters is presented based on the response surface method,finite element complex eigenvalue a-nalysis,and theories of reliability.In the proposed method,Young's modulus of the friction plate,brake shoe,and brake drum is treated as uncertain parameters,with the interval parameters describing the un-certainties in the braking system.Then,a response surface approximation model of the coefficient with in-terval uncertainty parameters is built up in a drum brake,achieving model parameterization for brake sta-bility analysis.Furthermore,by combining interval analysis with reliability analysis,the drum brake sys-tem model uses the proposed method,the statistical regularities of the drum brake system with the uncer-tainty of Young's modulus are analyzed,and the results show that enhancing the control over the Young's modulus of the brake shoe and friction plate can improve the vibration stability of a brake system effective-ly and reliably under uncertainty conditions.Reference value is provided for the suppression of brake noise in engineering.
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维普
