In view of the brake squeal suppression problem of automotive disc brakes during braking

the effects of brake imbalance and uncertainty in brake parameters

a stability and reliability analysis method of disc brake with the hybrid parameters was proposed by combining response surface methodology

finite element method

and reliability analysis theory. In this method . random

uncertain interval and fuzzy parameters were used to describe the dynamie characteristies of the brake system

and an unstable order response surface agent model of the disc brake system was established including random parameters

uncertain interval parameters and fuzzy parameters. Then

the remarkable affecting factors were obtained through sensitivity analysis of stability and reliability on brake system. Therefore

the influence laws of the second-order interaction of each factor were analyzed deeply based on stability and reliability analysis in Design Expert software. This method was used to verify the caliper disc brake of a certain type of automobile

and the results show that when the stability of the brake system with mixed parameters is not ideal

it can improve the stability of brake system effectively by increasing the thickness and elastie modulus of back plate of brake system.