Novel limit distribution for the analysis of randomly mistuned bladed disks

Marc Mignolet, Chung Chih Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A recently introduced perturbation technique is employed to derive a novel closed form model for the probability density function of the resonant and near-resonant, steady state amplitude of blade response in randomly mistuned disks. In its most general form, this model is shown to involve six parameters but, in the important practical case of a pure stiffness (or frequency) mistuning, only three parameters are usually sufficient to completely specify this distribution. A series of numerical examples are presented that demonstrate the extreme reliability of this three-parameter model in accurately predicting the entire probability density function of the amplitude of response, and in particular the large amplitude tail of this distribution which is the most critical effect of mistuning.

Original languageEnglish (US)
Title of host publicationAmerican Society of Mechanical Engineers (Paper)
PublisherASME
Publication statusPublished - 1996
EventProceedings of the 1996 International Gas Turbine and Aeroengine Congress & Exhibition - Burmingham, UK
Duration: Jun 10 1996Jun 13 1996

Other

OtherProceedings of the 1996 International Gas Turbine and Aeroengine Congress & Exhibition
CityBurmingham, UK
Period6/10/966/13/96

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ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Mignolet, M., & Lin, C. C. (1996). Novel limit distribution for the analysis of randomly mistuned bladed disks. In American Society of Mechanical Engineers (Paper) ASME.