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Analysis of Disc Brake Squeal, 1992
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English
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.
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Authors
Citation
Matsui, H., Murakami, H., Nakanishi, H., and Tsuda, Y., "Analysis of Disc Brake Squeal, 1992," SAE Technical Paper 920553, 1992, https://doi.org/10.4271/920553.Also In
References
- Millner N. “An Analysis of Disc Brake Squeal.” SAE paper 780332
- Murakami H. “A Study Concerned with a Mechanism of Disc-Brake Squeal,” SAE paper 841233
- Nishiwaki M. “Study on Disc Brake Squeal,” SAE paper 890864
- Nishiwaki M. “Brake Squeal,” Journal of Society of Automotive Engineers of Japan 43 12 1989
- Inoue M. “Frictional Properties of Disc-Brake Pad,” Trans. Japan Soc. Mech. Eng. 51 466 1985