Title

Vibration Reduction Of Mistuned Bladed Disks Via Piezoelectric-Based Resonance Frequency Detuning

Abstract

This paper extends the resonance frequency detuning (RFD) vibration reduction approach to cases of turbomachinery blade mistuning. Using a lumped parameter mistuned blade model with included piezoelectric elements, this paper presents an analytical solution of the blade vibration in response to frequency sweep excitation; direct numerical integration confirms the accuracy of this solution. A Monte Carlo statistical analysis provides insight regarding vibration reduction performance over a range of parameters of interest such as the degree of blade mistuning, linear excitation sweep rate, inherent damping ratio, and the difference between the open-circuit (OC) and short-circuit (SC) stiffness states. RFD reduces vibration across all degrees of blade mistuning as well as the entire range of sweep rates tested. Detuning also maximizes vibration reduction performance when applied to systems with low inherent damping and large electromechanical coupling.

Publication Date

10-1-2018

Publication Title

Journal of Vibration and Acoustics, Transactions of the ASME

Volume

140

Issue

5

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1115/1.4039540

Socpus ID

85046549388 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85046549388

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