Abstract
This paper describes the numerical results about squeal of disk brake. The squeal considered in this paper is low frequency squeal (1.8-2.5kHz), and has coupled vibration modes between rotor and caliper through pads. To investigate the mechanism of low frequency squeal, disk brake is modeled as a two-degree-of-freedom model. The brake system become unstable and occur the squeal when the coefficient of friction is relatively high. And to make the stiffness of caliper bigger, the squeal is restrained. From the analysis, it was made clear that the coefficient of friction between rotor and pads, and stiffness of caliper (especially the stiffness of trailing side) had grent influence to the low frequency squeal. So in design of the real brake system, these values are very important to restrain the low frequency squeal.
