Transfer matrix approach to vibration localization in mistuned blade assemblies

Gisli Ottarsson, Christophe Pierre

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

A study of mode localization in mistuned bladed disks is performed using transfer matrices. The transfer matrix approach yields the free response of a general, mono-coupled, perfectly cyclic assembly in closed form. A mistuned structure is represented by random transfer matrices, and the expansion of these matrices in terms of the small mistuning parameter leads to the definition of a measure of sensitivity to mistuning. An approximation of the localization factor, the spatially averaged rate of exponential attenuation per blade-disk sector, is obtained through perturbation techniques in the limits of high and low sensitivity.

Original languageEnglish
JournalAmerican Society of Mechanical Engineers (Paper)
StatePublished - 1993
EventInternational Gas Turbine and Aeroengine Congress and Exposition - Cincinnati, OH, USA
Duration: 24 May 199327 May 1993

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