A 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

4 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) mistiming, 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 publicationASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996
PublisherAmerican Society of Mechanical Engineers
Volume5
ISBN (Print)9780791878767
DOIs
StatePublished - 1996
EventASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996 - Birmingham, United Kingdom
Duration: Jun 10 1996Jun 13 1996

Other

OtherASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996
CountryUnited Kingdom
CityBirmingham
Period6/10/966/13/96

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ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Nuclear Energy and Engineering
  • Aerospace Engineering
  • Mechanical Engineering

Cite this

Mignolet, M., & Lin, C. C. (1996). A novel limit distribution for the analysis of randomly mistuned bladed disks. In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996 (Vol. 5). American Society of Mechanical Engineers. https://doi.org/10.1115/96-GT-414