The damping capacity of a squeeze film damper in suppressing vibration of a rotating assembly
The damping capacity of a squeeze film damper in suppressing vibration of a rotating assembly
A flexible shaft with an overhung disc supported by the squeeze-film damper is investigated theoretically and experimentally. The system is simplified as a three-mass system based on a transfer matrix calculation. Governing equations for both models with and without retainer spring are derived. A fast integration method is used to obtain vibration responses. Both concentric and eccentric responses at the damper are examined. Different imbalances and different supply pressures are supplied to see their influence on the vibration of the system. It is found that for the system with retainer spring, positions of the resonance move between two extremes, one of which is the case with no damping in the system and the other with “full damping” where the SFD is locked-out and the system behaves exactly like one without a retainer spring. Therefore, improvements can be obtained by using a centralizing retainer spring and an accompanying SFD as resonance peaks can be moved to lower frequencies and/or such peaks can be kept down to reasonable limits. Nonlinear subharmonic and superharmonic responses are also found
rotor-bearing system, squeeze-film damper, damping, fast integration method
81-97
Chou, F.
069dd85f-4d88-4ca5-af21-1119da66a320
Holmes, R.
fdaa2f83-4b4f-4de7-bfe3-d811750c0ebd
2000
Chou, F.
069dd85f-4d88-4ca5-af21-1119da66a320
Holmes, R.
fdaa2f83-4b4f-4de7-bfe3-d811750c0ebd
Chou, F. and Holmes, R.
(2000)
The damping capacity of a squeeze film damper in suppressing vibration of a rotating assembly.
Tribology International, 33 (2), .
(doi:10.1016/S0301-679X(00)00030-X).
Abstract
A flexible shaft with an overhung disc supported by the squeeze-film damper is investigated theoretically and experimentally. The system is simplified as a three-mass system based on a transfer matrix calculation. Governing equations for both models with and without retainer spring are derived. A fast integration method is used to obtain vibration responses. Both concentric and eccentric responses at the damper are examined. Different imbalances and different supply pressures are supplied to see their influence on the vibration of the system. It is found that for the system with retainer spring, positions of the resonance move between two extremes, one of which is the case with no damping in the system and the other with “full damping” where the SFD is locked-out and the system behaves exactly like one without a retainer spring. Therefore, improvements can be obtained by using a centralizing retainer spring and an accompanying SFD as resonance peaks can be moved to lower frequencies and/or such peaks can be kept down to reasonable limits. Nonlinear subharmonic and superharmonic responses are also found
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Published date: 2000
Keywords:
rotor-bearing system, squeeze-film damper, damping, fast integration method
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Local EPrints ID: 21413
URI: http://eprints.soton.ac.uk/id/eprint/21413
ISSN: 0301-679X
PURE UUID: 448fb67f-cdbc-417e-a004-1c770f973685
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Date deposited: 06 Feb 2007
Last modified: 15 Mar 2024 06:30
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Author:
F. Chou
Author:
R. Holmes
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