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A Mechanism of Disc-Brake Squeal
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English
Abstract
Further results, obtained from a pin-disc system, are presented which support the theory that the generation of squeal noise in disc-brakes is caused by a geometrically induced or kinematic constraint instability. The unstable regions are shown to be dependent on the coefficient of friction between the interacting surfaces and the magnitudes of the physical parameters of the system elements. The relevance of certain system parameters is discussed in relation to a three degree-of-freedom, undamped model having linear characteristics. Some results which appear to contradict the proposed basic squeal generating mechanism are explained. The fugitive nature of squeal noise in disc-brakes is discussed and an explanation is given based on the proposed instability theory.
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Citation
Earles, S., "A Mechanism of Disc-Brake Squeal," SAE Technical Paper 770181, 1977, https://doi.org/10.4271/770181.Also In
References
- “British Patent Specification No. 254561” 1925
- North M.R. “A Mechanism of Disc Brake Squeal” 14th FISITA Meeting June 1971
- Javis R.P. Mills B. “Vibrations Induced by Dry Friction” Proc. Instn. Mech. Engrs. 178 1963 64 847 866
- Spurr R.T. “A Theory of Brake Squeal” Proc. Auto. Div. Instn. Mech. Engrs. 1 1961 62 33 40
- Earles S.W.E. Soar G.B. “Squeal Noise in Disc Brakes” Proc. Instn. Mech. Engrs. Vibration and Noise in Motor Vehicles 1971 61 69
- Earles S.W.E. Soar G.B. “A Vibrational Analysis of a Pin-Disc System With Particular Reference to Squeal Noise in Disc-Brakes” Inst. Physics, Stress Analysis Group Annual Conference 1974
- Earles S.W.E. Lee C.K. “Instabilities Arising from the Frictional Interaction of a Pin-Disc System Resulting in Noise Generation” Trans. A.S.M.E., Journal of Engineering for Industry 98 1 81 86