Vibration and dynamic response control of cantilevers carrying externally mounted stores

L. Librescu, Sung Soo Na

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The vibrational and dynamic response control of cantilevers carrying externally mounted stores is investigated. The cantilevered structure is modeled as a thin-walled beam of arbitrary cross section and incorporates a number of nonclassical effects such as transverse shear, secondary warping, anisotropy of constituent materials, and heterogeneity of the construction. The control is carried out via a dynamic bending moment applied at the tip of the structure. A feedback control law relating the boundary moment with one of the kinematical variables characterizing the response of the beam is implemented, and its results upon the closed-loop eigenfrequencies and dynamic response are highlighted. The obtained numerical results emphasize the efficiency of this control methodology to enhance, without weight penalties, vibrational and dynamic response behavior and inhibit and even suppress the occurrence of the resonance phenomenon.

Original languageEnglish
Pages (from-to)3516-3522
Number of pages7
JournalJournal of the Acoustical Society of America
Volume102
Issue number6
DOIs
Publication statusPublished - 1997 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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