Abstract
The non-equilibrium contact phenomenon caused by the time difference between the friction plates on both sides and the brake disc during the braking process of the disc brake was analyzed. The brake noise problem in this non-simultaneous clamping condition was studied. Then a three-dimensional assembly model was established and the finite element method was used to find the complex mode and its instability coefficient under different operating conditions when t h e b r ak e w as in u n b al an ce d con ta ct. T he r esults s how th at during non-equilibrium braking, the inherent frequency and low-frequency stability of the braking system decreases, the instability modes increase significantly, and the shorter time difference leads to a strong tendency of whistling.
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