This paper is the second in a two-part study of identifying mistuning in bladed disks. It presents experimental validation of a new method of mistuning identification based on measurements of the vibratory response of the system as a whole. As a system-based method, this approach is particularly suited to integrally bladed rotors, whose blades cannot be removed for individual measurements. The method is based on a recently developed reduced-order model of mistuning called the fundamental mistuning model (FMM) and is applicable to isolated families of modes. Two versions of FMM system identification are applied to the experimental data: a basic version that requires some prior knowledge of the system’s properties, and a somewhat more complex version that determines the mistuning completely from experimental data.
Mistuning Identification of Bladed Disks Using a Fundamental Mistuning Model—Part II: Application
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 December 2002; final revision March 2003. Paper No. 2003-GT-38953. Review Chair: H. R. Simmons.
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Feiner , D. M., and Griffin, J. H. (March 26, 2004). "Mistuning Identification of Bladed Disks Using a Fundamental Mistuning Model—Part II: Application ." ASME. J. Turbomach. January 2004; 126(1): 159–165. https://doi.org/10.1115/1.1643914
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