Nonlinear Identification of a Squeeze-Film Damper

[+] Author and Article Information
R. Stanway, J. E. Mottershead, R. Firoozian

Department of Mechanical Engineering, University of Liverpool, Liverpool L69 3BX, Merseyside, U.K.

J. Tribol 110(3), 486-491 (Jul 01, 1988) (6 pages) doi:10.1115/1.3261654 History: Received September 07, 1986; Online October 29, 2009


In this paper the authors describe an experimental study to identify the damping laws associated with a squeeze-film vibration damper. This is achieved by using a nonlinear filtering algorithm to process displacement responses of the damper ring to synchronous excitation and thus to estimate the parameters in an nth-power velocity model. The experimental facility is described in detail and a representative selection of results is included. The identified models are validated through the prediction of damper-ring orbits and comparison with observed responses.

Copyright © 1988 by ASME
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