A new reduced order model of mistuned bladed disk vibration is presented. This new approach is shown to accurately represent the response of real turbine geometries when only a single family of modes is excited. Yet its mathematical form is even simpler than that of a mass-spring model. Because it requires only minimal input data, this model is much easier to use than previous reduced order methods. Furthermore, its simplicity allows the fundamental parameters that control mistuning to be readily identified.
A Fundamental Model of Mistuning for a Single Family of Modes
Contributed by the International Gas Turbine Institute and presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Amsterdam, The Netherlands, June 3–6, 2002. Manuscript received by the IGTI, January 30, 2002. Paper No. 2002-GT-30425. Review Chair: E. Benvenuti.
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Feiner, D. M., and Griffin, J. H. (November 7, 2002). "A Fundamental Model of Mistuning for a Single Family of Modes ." ASME. J. Turbomach. October 2002; 124(4): 597–605. https://doi.org/10.1115/1.1508384
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