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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

The Nonlinear Response of Multimode Rotors Supported on Squeeze Film Dampers

[+] Author and Article Information
R. Y. Yakoub, A. El-Shafei

Department of Mechanical Design and Production, Faculty of Engineering Cairo University, Giza 12316, Egypt

J. Eng. Gas Turbines Power 123(4), 839-848 (Dec 01, 2000) (10 pages) doi:10.1115/1.1370974 History: Received July 01, 1998; Revised December 01, 2000
Copyright © 2001 by ASME
Topics: Algorithms , Dampers , Rotors , Force
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References

Figures

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Multidisk rotor supported by squeeze film damper (SFD)
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Aircraft gas turbine fan rotor and its mode shapes
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The unbalance response of an aircraft gas turbine fan rotor (AGTFR). Case 41: Damper location: fan bearing (point #4), unbalanced disk: fan (point #1), short uncavitated damper (SU-model).
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The unbalance response of an aircraft gas turbine fan rotor (AFTFR). Case 42: Damper location: fan bearing (point #4), unbalanced disk: first stage fan (point #2), short uncavitated damper (SU-model).
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(a) The effect of damper clearance on the vibration amplitude, short uncavitated damper (SU-model)
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(b) the effect of damper clearance on the damper forces, short uncavitated damper (SU-model)
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(a) The effect of retainer spring stiffness on the vibration amplitude, short uncavitated damper (SU-model)
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(b) the effect of retainer spring stiffness on the damper forces, short uncavitated damper (SU-model)
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(a) The effect of the unbalance on the vibration amplitude, short cavitated damper (SC-model); (b) the effect of the unbalance on the damper forces, short cavitated damper (SC-model)

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