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- Title
Influence of surface run-out on disc brake squeal.
- Authors
Hong-Ming Lv; Li-Jun Zhang; Zhuo-Ping Yua
- Abstract
As a complicated phenomenon of friction-induced noise, disc brake squeal has remained a challenge to automotive industry. To investigate the intermittent characteristics of disc brake squeal, a three-degree-of-freedom dynamics model considering both the friction coefficient and the disc surface run-out (SRO) is established in this paper. Their influences on system complex eigenvalues and transient responses are numerically investigated. At the same time, an experiment is conducted based on a pin-on-disc setup. The experimental results show that disc brake squeal is mainly dependent on modal coupling, and influenced by the incline angle of disc SRO. When disc brake squeal occurs, the time history of sound pressure is consistent with that of the disc vibration, which is due to the synchronization of the incline angle of macro and micro disc SRO that has the equivalent effect on system stability as friction coefficient does.
- Subjects
DISC brakes for automobiles; FRICTION; SURFACES (Technology); DEGREES of freedom; AUTOMOBILE industry; EIGENVALUES; TRANSIENT responses (Electric circuits)
- Publication
Journal of Vibroengineering, 2013, Vol 15, Issue 2, p520
- ISSN
1392-8716
- Publication type
Article