Response of bladed disks with mistuned blade-disk interfaces

Javier Avalos, Marc Mignolet, Christian Soize

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

14 Scopus citations


This paper focuses on the determination of the effects on the bladed disk forced response of small variations (mistuning) in the blade-disk interface properties as may result from blade seating. A blade-interface-disk mean model is first developed that relies on both the Craig-Bampton approach and a local modeling of the interface. Then, both model and data uncertainties are introduced in this model using the nonparametric stochastic modeling approach. An example of application is presented that indicates a difference in physical behavior of a bladed disk with mistuned interfaces as compared to one with mistuned blade alone frequencies. Most notably, it is shown that at equal variability on the blade frequencies, the variations in blade-disk interface properties lead to a higher amplification factor.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Turbo Expo 2009
Subtitle of host publicationPower for Land, Sea and Air
Number of pages10
EditionPART A
StatePublished - 2009
Event2009 ASME Turbo Expo - Orlando, FL, United States
Duration: Jun 8 2009Jun 12 2009

Publication series

NameProceedings of the ASME Turbo Expo
NumberPART A


Other2009 ASME Turbo Expo
Country/TerritoryUnited States
CityOrlando, FL


  • Blade vibration
  • Bladed disk
  • Interface variations
  • Mistuning
  • Nonparametric stochastic modeling
  • Random matrices

ASJC Scopus subject areas

  • General Engineering


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