A theory was previously developed for predicting robust maximum forced response in mistuned bladed disks from distortion of a structural mode. This paper describes an experiment to demonstrate the theory. A bladed disk is designed to be sufficiently sensitive to mistuning to obtain maximum response. The maximum amplitude magnification from mistuning is predicted using the theory, 1.918. The bladed disk is intentionally mistuned to obtain the maximum response, and the response to an engine order traveling wave excitation is measured. The measured amplitude magnification is in close agreement with the theory. The robustness of the maximum response is demonstrated.
Experimental Demonstration of Maximum Mistuned Bladed Disk Forced Response
Contributed by the International Gas Turbine Institute and presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Atlanta, GA, June 16–19, 2003. Manuscript received by the IGTI Dec. 2002; final revision Mar. 2003. Paper No. 2003-GT-38060. Review Chair: H. R. Simmons.
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Kenyon, J. A., and Griffin, J. H. (December 1, 2003). "Experimental Demonstration of Maximum Mistuned Bladed Disk Forced Response ." ASME. J. Turbomach. October 2003; 125(4): 673–681. https://doi.org/10.1115/1.1624847
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