Study of a Method for Reducing Drum Brake Squeal

Since the modal density of a drum brake system is higher than that of a disc brake system, it is very difficult to identify the cause of brake squeal. The causes of squeal were examined by both complex eigenvalue analysis and experimental analysis. It was confirmed that a complex eigenvalue analysis of a finite element model, a technique so far generally applied to disc brake squeal studies, was effective in analyzing squeal problems of drum brakes.