Squeal noise of a drum brake is mainly due to the unstable vibration excited by friction. In this paper, the model of a drum brake was made to analyze the squeal phenomena. The model could describe the relationship between the critical friction coeffi...
Squeal noise of a drum brake is mainly due to the unstable vibration excited by friction. In this paper, the model of a drum brake was made to analyze the squeal phenomena. The model could describe the relationship between the critical friction coefficient and the shapes, mechanical properties of drums and shoes. Based on model tests and analysis, dynamic properties of brake elements used in the model were determined. The result shows that the design modifications of the shoe and drum are feasible for noise reduction. Particularly, changes on the drum section were effective.<br/>