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In-Plane Mode/Friction Process & Their Contribution to Disc Brake Squeal at High Frequency
Technical Paper
2000-01-2773
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper first gives a brief review on brake squeal mechanisms and then studies in-plane modes/friction process and their contribution to disc brake squeal. Pulsed laser electronic speckle pattern interferometry was used to acquire the operational deflection shape (ODS) of a disc brake when it was squealing. Laser vibrometry was used to obtain mode shapes of brake discs/rotors including both the out-of-plane (transverse) modes and in-plane (radial or tangential) modes. The rubbing friction process with a non-rotation rotor under a free-free boundary condition was used to simulate friction-induced vibration. The coupling between in-plane modes and out-of-plane modes/vibration is believed to be the key to produce squeal. The in-plane modes tend to control the squeal frequency, and the out-of-plane modes/vibration are efficient to generate noise. Many case studies have shown that high frequency disc brake squeal occurs at one or some of its rotor in-plane resonant frequencies. Test results and analysis conclusion are provided.
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Authors
Citation
Chen, F., Chen, S., and Harwood, P., "In-Plane Mode/Friction Process & Their Contribution to Disc Brake Squeal at High Frequency," SAE Technical Paper 2000-01-2773, 2000, https://doi.org/10.4271/2000-01-2773.Also In
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