An experimental investigation of vibration localization in bladed disks, Part II: Forced response

Marlin J. Kruse, Christophe Pierre

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

The results of an experimental investigation on the effects of random blade mis tuning on the forced dynamic response of bladed disks are reported. Two experimental specimens are considered: a nominally periodic twelve-bladed disk with equal blade lengths, and the corresponding mistuned bladed disk, which features slightly different blades of random lengths. Both specimens are subject to traveling-wave excitations delivered by piezo-electric actuators. The primary aim of the experiment is 10 demonstrate the occurrence of an increase in forced response blade amplitudes due to mistuning, and to verify analytical predictions about the magnitude of these increases. In particular, the impact of localized mode shapes, engine order excitation, and disk structural coupling on the sensitivity of forced response amplitudes to blade mistuning is reported. This work reports one of the first systematic experiments carried out to demonstrate and quantify the effect of mistuning on the forced response of bladed disks.

Original languageEnglish
Title of host publicationManufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award
ISBN (Electronic)9780791878712
DOIs
StatePublished - 1997
EventASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1997 - Orlando, United States
Duration: 2 Jun 19975 Jun 1997

Publication series

NameProceedings of the ASME Turbo Expo
Volume4

Conference

ConferenceASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1997
Country/TerritoryUnited States
CityOrlando
Period2/06/975/06/97

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