A Study on Drum-Brake Noise of Heavy Duty Vehicle

This paper presents an experimental study on the brake noise having a main frequency of about 500 Hz.

From the vibration modes of the brake components during the brake noise occurrence, some resonance systems which might be the cause of the noise were considered. As a result of investigating these resonance systems experimentally, the resonance system which concerns to the noise was found out.

From the resulting evaluation of the noise by changing the vibration characteristics of the resonance system through modification of the brake components, it was found that the spring constant and the damping coefficient of the wheel brake component correlate well to the brake noise level.

Using these correlations have made it easier to improve the brake noise.