In-Plane Mode/Friction Process & Their Contribution to Disc Brake Squeal at High Frequency 2000-01-2773
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.
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. Download Citation
Author(s):
F. Chen, Shih-Emn Chen, Pat Harwood
Affiliated:
Research and Vehicle Technology, Ford Motor Co.
Pages: 15
Event:
18th Annual Brake Colloquium And Engineering Display
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 18th Annual Brake Colloquium & Engineering Display-P-358
Related Topics:
Brake discs
Disc brakes
Noise
Vibration
Propellers and rotors
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