A novel perturbation-based approach for the prediction of the forced response of damped mistuned bladed disks

Yun Han, Marc Mignolet

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper focuses on the formulation and validation of a novel perturbation method for the prediction of the forced response of mistuned bladed disks. At the contrary of most previous methods, this approach leads to a convergent series representation over the entire range of blade-disk coupling levels for small mistuning. The dominant parameter affecting the magnitude of the largest mistuning for which convergence occurs is shown to be the system damping with a weaker effect of the blade-disk coupling. Examples of application on a single degree-of-freedom per blade model and the reduced order model of a blisk demonstrate the potential of this novel approach. Finally, the applicability of this technique for the optimization of intentional mistuning pattern is shown.

Original languageEnglish (US)
Article number041008
JournalJournal of Vibration and Acoustics, Transactions of the ASME
Volume137
Issue number4
DOIs
StatePublished - Aug 1 2015

Fingerprint

blades
perturbation
predictions
Damping
degrees of freedom
damping
formulations
optimization

Keywords

  • Blade vibration
  • Bladed disk
  • Intentional mistuning
  • Mistuning
  • Perturbation method

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

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