Control of bending oscillation of cantilevers via adaptive materials technology

L. Librescu, L. Meirovitch, Sung Soo Na

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper is concerned with the problem of controlling the bending oscillations of cantilevers subjected to time-dependent external excitations. The structural model consists of a thin-walled beam of arbitrary cross-section and includes a number of nonclassical effects, such as transverse shear, secondary warping and heterogeneity. The control is achieved via the converse effect of piezoelectric materials bonded to or embedded into the host structure. A dynamic control law relating the piezoelectrically induced bending moment to the angular velocity at the tip of the structure is implemented and the closed-loop eigenvalues and dynamic response to harmonic excitations are highlighted. A computational methodology based on the extended Galerkin's technique for determining the closed-loop frequency-response characteristics is used and numerical results revealing the strong implications of the adaptive technology are displayed.

Original languageEnglish
Title of host publicationAIAA Dynamics Specialists Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages98-106
Number of pages9
DOIs
Publication statusPublished - 1996
Externally publishedYes
EventAIAA Dynamics Specialists Conference, 1996 - Salt Lake City, United States
Duration: 1996 Apr 181996 Apr 19

Other

OtherAIAA Dynamics Specialists Conference, 1996
CountryUnited States
CitySalt Lake City
Period96/4/1896/4/19

Fingerprint

harmonic excitation
bending moments
dynamic control
oscillations
Piezoelectric materials
Angular velocity
Bending moments
angular velocity
dynamic response
frequency response
Frequency response
Dynamic response
eigenvalues
methodology
shear
cross sections
excitation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Aerospace Engineering

Cite this

Librescu, L., Meirovitch, L., & Na, S. S. (1996). Control of bending oscillation of cantilevers via adaptive materials technology. In AIAA Dynamics Specialists Conference (pp. 98-106). [AIAA-96-1212-CP] American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.1996-1212

Control of bending oscillation of cantilevers via adaptive materials technology. / Librescu, L.; Meirovitch, L.; Na, Sung Soo.

AIAA Dynamics Specialists Conference. American Institute of Aeronautics and Astronautics Inc, AIAA, 1996. p. 98-106 AIAA-96-1212-CP.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Librescu, L, Meirovitch, L & Na, SS 1996, Control of bending oscillation of cantilevers via adaptive materials technology. in AIAA Dynamics Specialists Conference., AIAA-96-1212-CP, American Institute of Aeronautics and Astronautics Inc, AIAA, pp. 98-106, AIAA Dynamics Specialists Conference, 1996, Salt Lake City, United States, 96/4/18. https://doi.org/10.2514/6.1996-1212
Librescu L, Meirovitch L, Na SS. Control of bending oscillation of cantilevers via adaptive materials technology. In AIAA Dynamics Specialists Conference. American Institute of Aeronautics and Astronautics Inc, AIAA. 1996. p. 98-106. AIAA-96-1212-CP https://doi.org/10.2514/6.1996-1212
Librescu, L. ; Meirovitch, L. ; Na, Sung Soo. / Control of bending oscillation of cantilevers via adaptive materials technology. AIAA Dynamics Specialists Conference. American Institute of Aeronautics and Astronautics Inc, AIAA, 1996. pp. 98-106
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