Application of particle damping for vibration attenuation in brake drum
The mechanism of noise of brake is very complex. A particle damper can be introduced without changing the shape of the structure and the addition of mass, and it may be applied in extreme temperature environments where most conventional dampers would fail. However, previous particle damper designs have been based on trial-and-error experimentation. In this paper, the feasibility of an application of particle damping in the noise and vibration control of a rotating brake drum of a vehicle is analysed. A coupling simulation algorithm based on the discrete element method and finite element method is used to calculate and design the particle damper in the brake drum. This method makes it possible to investigate the properties of the particle damper in a rotating structure. The research results show that the presented particle damping is effective, and reasonable correlation is demonstrated between simulation and test.
Keywords: particle damping, rotating brake drums, discrete element method, DEM, vibration attenuation, brake noise, vehicle noise, vehicle vibration, particle damper design, particle dampers