Study on the stability of drum brake non-linear low frequency vibration model

A 5-DOF non-linear model is presented to simulate the vibration of a drum brake at low frequency in the course of applying the brake. Analysis and calculation are carried out to illuminate that even when the friction coefficient is constant, the vibration and instability can occur with the combination of some specific parameters. And the stable-unstable area on the parameter plane on the condition of the combination of some specific parameters is presented to illuminate the effect of the structure parameter on the system stability.