Vibration control of adaptive aircraft wings modeled as tapered thin-walled beams

L. Librescu, S. Na

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

A study of the vibrational control of adaptive doubly-tapered cantilevered beams, simulating an aircraft wing, exposed to time-dependent externam pulses is presented. Whereas the beam structure encompasses non-classical properties such as transverse shear, anisotropy and heterogeneity of their constitutent materials, the active control capabilities are based upon the implementation of the adaptive materials technology. Herein, the adaptive feature is achieved through the converse piezoelectric effect that consists of the generation of localized strains in response to an applied voltage. Piezoactuators in the form of patches or spread allover the beam span are considered. The active control involves the dynamic response to arbitrary time-dependent external pulses. The closed-loop dynamic response time histories are obtained via the use of the piezoelectrically induced boundary moment control, and through the implementation of a modified bang-bang control strategy that involves a maximum value constraint imposed on the input voltage. Numerical simulations emphasing the performance of the adopted control strategies intended to contain and even reduce to zero the response quantities when time unfolds are presented, and pertinent conclusions are outlined.

Original languageEnglish
Pages (from-to)319-330
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4326
DOIs
Publication statusPublished - 2001
Externally publishedYes
EventSmart Structures and Materials 2001-Modeling, Signal Processing, and Control in Smart Structures- - Newport Beach, CA, United States
Duration: 2001 Mar 52001 Mar 8

Keywords

  • Bang-bang control
  • Boundary moment control
  • Closed-loop eigenfrequency/dynamic response
  • Dynamic response control
  • Piezoactuator
  • Tapered beam
  • Thin-walled beam

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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