The study of eccentric squeeze film damped rotor dynamic systems has largely concentrated on rigid rotors. In this paper, a newly developed receptance harmonic balance method is used to efficiently analyze a squeeze film damped flexible rotor test rig. The aim of the study is to investigate the influence of damper static eccentricity and unbalance level on cavitation and its resulting effect on the vibration level. By comparing predictions for the rotor vibration levels obtained respectively with, and without, lower pressure limits for the eccentric squeeze film damper model, it is demonstrated that cavitation is promoted by increasing static eccentricity and/or unbalance level. This, in turn, is found to have a profound effect on the predictions for the critical vibration levels, which such dampers are designed to attenuate. The reported findings are backed by experimental evidence from the test rig.
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ASME Turbo Expo 2002: Power for Land, Sea, and Air
June 3–6, 2002
Amsterdam, The Netherlands
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
0-7918-3609-6
PROCEEDINGS PAPER
A Study of the Influence of Static Eccentricity and Unbalance on Cavitation Effects in a Squeeze Film Damped Flexible Rotor
Philip Bonello,
Philip Bonello
University of Southampton, Highfield, Southampton, UK
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Michael J. Brennan,
Michael J. Brennan
University of Southampton, Highfield, Southampton, UK
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Roy Holmes
Roy Holmes
University of Southampton, Highfield, Southampton, UK
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Philip Bonello
University of Southampton, Highfield, Southampton, UK
Michael J. Brennan
University of Southampton, Highfield, Southampton, UK
Roy Holmes
University of Southampton, Highfield, Southampton, UK
Paper No:
GT2002-30288, pp. 563-572; 10 pages
Published Online:
February 4, 2009
Citation
Bonello, P, Brennan, MJ, & Holmes, R. "A Study of the Influence of Static Eccentricity and Unbalance on Cavitation Effects in a Squeeze Film Damped Flexible Rotor." Proceedings of the ASME Turbo Expo 2002: Power for Land, Sea, and Air. Volume 4: Turbo Expo 2002, Parts A and B. Amsterdam, The Netherlands. June 3–6, 2002. pp. 563-572. ASME. https://doi.org/10.1115/GT2002-30288
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