Vibration and dynamic response control of elastically tailored nonuniform adaptive aircraft wings

Sungsoo Na, Liviu Librescu

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

A dual approach integrating structural tailoring and adaptive materials technology aimed at controlling the dynamic response of aircraft wing structures exposed to external pressure pulses is presented. Whereas structural tailoring uses the directionality properties of advanced composite materials, the adaptive materials technology exploits the actuating and sensing capabilities of piezoelectric material systems bonded or embedded into the host structure. In this study the wing structure is modeled as a doubly-tapered composite thin-walled beam incorporating a number of non-classical features such as transverse shear, warping inhibition, anisotropy of constituent materials and rotatory inertias. The cases of piezoactuators spread over the entire span of the structure, or in the form of a patch are considered, and issues related with the influence of patch location and size upon the control efficiency are discussed. Other issues related with the implications upon the dynamic response characteristics of the inclusion/discard in the quadratic performance index of time-dependent external excitations are also addressed. The displayed numerical results provide a comprehensive picture of the synergistic implications of the application of both technologies, namely of the tailoring and optimal control upon the vibration response of non-uniform wing structures exposed to external time-dependent excitation.

Original languageEnglish
Publication statusPublished - 2000 Dec 1
Event41st Structures, Structural Dynamics, and Materials Conference and Exhibit 2000 - Atlanta, GA, United States
Duration: 2000 Apr 32000 Apr 6

Conference

Conference41st Structures, Structural Dynamics, and Materials Conference and Exhibit 2000
CountryUnited States
CityAtlanta, GA
Period00/4/300/4/6

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Building and Construction
  • Architecture

Cite this

Na, S., & Librescu, L. (2000). Vibration and dynamic response control of elastically tailored nonuniform adaptive aircraft wings. Paper presented at 41st Structures, Structural Dynamics, and Materials Conference and Exhibit 2000, Atlanta, GA, United States.