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TECHNICAL PAPERS

Method for Direct Parametric Analysis of Nonlinear Forced Response of Bladed Disks With Friction Contact Interfaces

[+] Author and Article Information
E. P. Petrov

Mechanical Engineering Department, Centre of Vibration Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK

J. Turbomach 126(4), 654-662 (Dec 29, 2004) (9 pages) doi:10.1115/1.1776588 History: Received October 01, 2003; Revised March 01, 2004; Online December 29, 2004
Copyright © 2004 by ASME
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References

Figures

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Bladed disk analyzed: (a) a sector of the bladed disk; (b) natural frequencies in the frequency range analyzed
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Finite element model: (a) a blade; (b) a blade damper contact node; (c) shroud contact nodes
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Forced response for the bladed disc with underplatform dampers: (a) in vicinity of 1st resonance (with 1F mode); (b) in vicinity of 2nd resonance (with 1E mode)
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Forced response as a function of the normal load at UPD: (a) in vicinity of 1st resonance (with 1F mode); (b) in vicinity of 2nd resonance (with 1E mode)
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Forced response as a function of the UPD’s friction coefficient in vicinity of 1st resonance (with 1F mode)
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Forced response as a function of the stiffness of the UPD in vicinity of 1st resonance (with 1F mode)
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Forced response for shroud contacts: (a) a case with clearances; (b) a case with interferences
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Forced response as a function of clearances (a) and interferences (b)
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Forced response as a function of friction coefficient, μ, for shrouds with clearances (a) and interferences (b)

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