This paper employs a continuous rotor model and a contacting SDOF system to examine dither’s role in stabilizing friction-induced oscillations. The disc rotor is modeled by a thin, clamped-free annular plate. Under the action of tangential dither, the frictional contact load is represented by a sinusoidally-varying follower force. The stability of the combined system, with and without dither signals, is assessed using multiple-scale analysis and Floquet theory. It is shown that dither is capable of quenching instabilities at some rotor speeds while at the same time producing new instabilities at other rotor speeds. The results suggest that one mechanism by which dither can suppress squeal is by changing the rotor speeds at which squeal vibrations occur.
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ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 4–7, 2007
Las Vegas, Nevada, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4802-7
PROCEEDINGS PAPER
Modification of Friction-Induced Instability in a Disk System Through Dither Excitation Forces
Michael A. Michaux,
Michael A. Michaux
Georgia Institute of Technology, Atlanta, GA
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Al Ferri,
Al Ferri
Georgia Institute of Technology, Atlanta, GA
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Kenneth A. Cunefare
Kenneth A. Cunefare
Georgia Institute of Technology, Atlanta, GA
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Michael A. Michaux
Georgia Institute of Technology, Atlanta, GA
Al Ferri
Georgia Institute of Technology, Atlanta, GA
Kenneth A. Cunefare
Georgia Institute of Technology, Atlanta, GA
Paper No:
DETC2007-35176, pp. 2075-2084; 10 pages
Published Online:
May 20, 2009
Citation
Michaux, MA, Ferri, A, & Cunefare, KA. "Modification of Friction-Induced Instability in a Disk System Through Dither Excitation Forces." Proceedings of the ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 21st Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C. Las Vegas, Nevada, USA. September 4–7, 2007. pp. 2075-2084. ASME. https://doi.org/10.1115/DETC2007-35176
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