The Nonlinear Response of Multimode Rotors Supported on Squeeze Film Dampers

R. Y. Yakoub; A. El-Shafei

doi:10.1115/1.1370974

Journal of Engineering for Gas Turbines and Power | Volume 123 | Issue 4 | TECHNICAL PAPERS

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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

The Nonlinear Response of Multimode Rotors Supported on Squeeze Film Dampers

R. Y. Yakoub and A. El-Shafei

[+] 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

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References

Figures

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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Yakoub RY, El-Shafei AA. The Nonlinear Response of Multimode Rotors Supported on Squeeze Film Dampers. ASME. J. Eng. Gas Turbines Power. 2000;123(4):839-848. doi:10.1115/1.1370974.

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The Nonlinear Response of Multimode Rotors Supported on Squeeze Film Dampers

References

Figures

Multidisk rotor supported by squeeze film damper (SFD)

Aircraft gas turbine fan rotor and its mode shapes

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).

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).

(a) The effect of damper clearance on the vibration amplitude, short uncavitated damper (SU-model)

(b) the effect of damper clearance on the damper forces, short uncavitated damper (SU-model)

(a) The effect of retainer spring stiffness on the vibration amplitude, short uncavitated damper (SU-model)

(b) the effect of retainer spring stiffness on the damper forces, short uncavitated damper (SU-model)

(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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