The problem of determining the maximum forced response vibration amplification that can be produced just by the addition of a small mistuning to a perfectly cyclical bladed disk still remains not completely clear. In this paper we apply a recently introduced perturbation methodology, the asymptotic mistuning model (AMM), to determine which are the key ingredients of this amplification process and to evaluate the maximum mistuning amplification factor that a given modal family with a particular distribution of tuned frequencies can exhibit. A more accurate upper bound for the maximum forced response amplification of a mistuned bladed disk is obtained from this description, and the results of the AMM are validated numerically using a simple mass-spring model.
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e-mail: carlos.martel@upm.es
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March 2009
Research Papers
Asymptotic Description of Maximum Mistuning Amplification of Bladed Disk Forced Response
Carlos Martel,
Carlos Martel
ETSI Aeronáuticos,
e-mail: carlos.martel@upm.es
Universidad Politécnica de Madrid
, 28040 Madrid, Spain
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Roque Corral
Roque Corral
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Carlos Martel
ETSI Aeronáuticos,
Universidad Politécnica de Madrid
, 28040 Madrid, Spaine-mail: carlos.martel@upm.es
Roque Corral
J. Eng. Gas Turbines Power. Mar 2009, 131(2): 022506 (10 pages)
Published Online: December 23, 2008
Article history
Received:
April 7, 2008
Revised:
April 9, 2008
Published:
December 23, 2008
Citation
Martel, C., and Corral, R. (December 23, 2008). "Asymptotic Description of Maximum Mistuning Amplification of Bladed Disk Forced Response." ASME. J. Eng. Gas Turbines Power. March 2009; 131(2): 022506. https://doi.org/10.1115/1.2968868
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