Analysis of Disc Brake Squeal, 1992
Authors:
- 1 February 1992
- conference paper
- Published by SAE International in SAE International Journal of Advances and Current Practices in Mobility
- Vol. 1
Abstract
Eliminating squeal noise generated during braking is an important task for the improvement of vehicle passengers' comfort. Considerable amount of research and development works have been done on the problem to date. In this study, we focused on the analyses of friction self-excited vibration and brake part resonance during high frequency brake squeal. Friction self-excited vibration is caused by the dry friction between pads and rotor, and occurs as a function of their relative sliding velocities. Its vibration frequency can be calculated in relation to the mass and stiffness of the pad sliding surface. Frequency responses of the brake assembly were measured and the vibration modes of the pad, disc and caliper during squeal were identified through modal analysis. Further study led to the development of a computer simulation method for analyzing the vibration modes of brake parts. Analytical results obtained using the method agreed well with the corresponding experimental data. Consequently, the theory on brake squeal mechanism is clarified.Keywords
This publication has 1 reference indexed in Scilit:
- Studies on friction materials of automobile. 1st report Squeal of disc brake pad.TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1985