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Maximum Bladed Disk Forced Response From Distortion of a Structural Mode

[+] Author Affiliations
J. A. Kenyon

Air Force Research Laboratory, Wright-Patterson AFB, OH

J. H. Griffin, D. M. Feiner

Carnegie Mellon University, Pittsburgh, PA

Paper No. GT2002-30426, pp. 965-980; 16 pages
doi:10.1115/GT2002-30426
From:
  • ASME Turbo Expo 2002: Power for Land, Sea, and Air
  • Volume 4: Turbo Expo 2002, Parts A and B
  • Amsterdam, The Netherlands, June 3–6, 2002
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-3609-6 | eISBN: 0-7918-3601-0
  • Copyright © 2002 by ASME

abstract

A method is presented for obtaining maximum bladed disk forced response from distortion of a structural mode. It is shown that maximum response from mode distortion in a bladed disk occurs when the harmonic components of a distorted mode superimpose in a certain manner, causing localization of the mode and strong response in a particular blade. In addition, it is shown that the response of an intentionally mistuned system with maximum response does not change significantly when small random mistuning is added to the system. A method is described for calculating the structural mistuning necessary to obtain the distorted mode that gives maximum response. The theory is validated numerically.

Copyright © 2002 by ASME
Topics: Disks

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