Maximum Bladed Disk Forced Response From Distortion of a Structural Mode-Reference-Cited by-同舟云学术

Maximum Bladed Disk Forced Response From Distortion of a Structural Mode

Published:2003-04-01 Issue:2 Volume:125 Page:352-363
ISSN:0889-504X
Container-title:Journal of Turbomachinery
language:en
Short-container-title:

Author:

Kenyon J. A.¹,Griffin J. H.²,Feiner D. M.²

Affiliation:

1. Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH 45433

2. Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213

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.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/turbomachinery/article-pdf/125/2/352/5757806/352_1.pdf

Reference23 articles.

1. Srinivasan, A. V. , 1997, “Flutter and Resonant Vibration Characteristics of Engine Blades,” ASME J. Eng. Gas Turbines Power, 119(4), pp. 742–775.

2. Kenyon, J. A., and Griffin, J. H., 2001, “Harmonic Mistuning of Turbine Engine Bladed Disks and Implications on Sensitivity to Forced Response,” ASME Paper 2001-GT-0274, International Gas Turbine Institute Turbo Expo, New Orleans, LA.

3. Kim, M., Moon, J., and Wickert, J. A., 2000, “Spatial Modulation of Repeated Vibration Modes in Rotationally Periodic Structures,” J. Vibr. Acoust., 122, pp. 62–68.

4. Ewins, D. J. , 1969, “The Effects of Detuning Upon the Forced Vibrations of Bladed Disks,” J. Sound Vib., 9(1), pp. 65–79.

5. MacBain, J. C., and Whaley, P. W., 1984, “Maximum Resonant Response of Mistuned Bladed Disks,” ASME J. Vib., Acoust., Stress, Reliab. Des., 106, pp. 218–223.

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