The results from a reduced order model based on frequency mistuning are compared with those from recently developed modified modal domain analysis (MMDA). For the academic bladed rotor considered in this paper, the frequency mistuning analysis is unable to capture the effects of geometric mistuning, whereas MMDA provides accurate estimates of natural frequencies, mode shapes, and forced response.
Accuracies of Reduced Order Models of a Bladed Rotor With Geometric Mistuning
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received June 28, 2011; final manuscript received September 18, 2013; published online December 27, 2013. Assoc. Editor: Matthew Montgomery.
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Bhartiya, Y., and Sinha, A. (December 27, 2013). "Accuracies of Reduced Order Models of a Bladed Rotor With Geometric Mistuning." ASME. J. Turbomach. July 2014; 136(7): 074501. https://doi.org/10.1115/1.4025666
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