Study on Friction and Vibration Characteristics of Brake Disc by Surface Micro-modeling

Abstract

Abstract Aiming at the problem of friction, vibration and noise during braking of disc brakes, the surface of the brake disc is micro-shaped with different densities and different angle distributions, and the finite element model of the disc brake is established. The complex eigenvalue analysis method was used to explore the influence of micro-modeling with different density and angle distribution on the friction and vibration characteristics of disc brakes under different working conditions. The results show that with the increase of braking pressure, the vibration instability of disc brakes increases. The speed of the brake disc has no obvious effect on the vibration stability of the brake; Increasing the elastic modulus of the brake disc will significantly reduce the friction vibration noise of the brake and improve the vibration stability of the brake when braking. The vibration stability of brakes with surface micro-modeling is significantly better than that of the original brakes under different pressure and speed conditions and the elastic modulus of the brake disc, and this paper provides a new idea for the structural optimization of brake vibration and noise reduction.