Modeling and bending vibration control of nonuniform thin-walled rotating beams incorporating adaptive capabilities

Sungsoo Na, Liviu Librescu, Jae Kyung Shim

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

This paper addresses the problems of modeling and bending vibration control of tapered rotating blades modeled as nonuniform thin-walled beams and incorporating adaptive capabilities. The blade model incorporates non-classical features such as transverse shear, secondary warping and includes the centrifugal and Coriolis force fields. For the non-adaptive system, an assessment of a number of non-classical features including the taper characteristics is accomplished. The adaptive capabilities are provided by a system of piezoactuators bonded to the structure surface and spread over the entire span of the beam. Based on the converse piezoelectric effect and on the out-of-phase actuation, the piezoactuators produce a localized strain field in response to the applied voltage, and consequently, a change of the dynamic response characteristics is induced. A combined feedback control law relating the piezoelectrically induced transversal bending moment at the beam tip with the kinematical response quantities appropriately selected is used, and the beneficial effects upon the closed-loop dynamic characteristics of the blade are highlighted.

Original languageEnglish
Pages (from-to)1347-1367
Number of pages21
JournalInternational Journal of Mechanical Sciences
Volume45
Issue number8
DOIs
Publication statusPublished - 2003 Aug

Keywords

  • Adaptive structures
  • Feedback control
  • Free vibration
  • Rotating blades

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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