A Study on Relationship between Pad Restraint Condition and Brake Squeal Generation

In this study, influences of the unstable pad behavior on brake squeal through analysis of the pad and rotor behavior during vehicle turning operations using a large-diameter rotor were investigated.

As a result, it was found that the local high pressure on the leading edge during rotor deflection caused by vehicle steering maneuvers acts as a trigger for the unstable pad behavior, and that it is important to mitigate an uneven pad pressure distribution through a shape change in order to improve anti-squeal performance.