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RESEARCH PAPERS

On Predicting the Resonant Response of Bladed Disk Assemblies

[+] Author and Article Information
J. H. Griffin

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

J. Eng. Gas Turbines Power 110(1), 45-50 (Jan 01, 1988) (6 pages) doi:10.1115/1.3240085 History: Received February 17, 1987; Online October 15, 2009

Abstract

The vibratory responses of blades in gas turbine engines vary because of mistuning. An approach is developed for calculating the statistical distribution of peak resonant stresses in engine blading. It is used to predict the vibratory response of an un-shrouded fan stage. The results of the calculation compare favorably with test data for the lower frequency modes. The procedure can be used to predict fleet durability and offers a practical engineering approach for dealing with stage mistuning.

Copyright © 1988 by ASME
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