Control of bending oscillation of cantilevers via adaptive materials technology

L. Librescu; L. Meirovitch; S. S. Na

doi:10.2514/6.1996-1212

Control of bending oscillation of cantilevers via adaptive materials technology

L. Librescu, L. Meirovitch, S. S. Na

Research output: Contribution to conference › Paper › peer-review

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 language	English
Pages	98-106
Number of pages	9
DOIs	https://doi.org/10.2514/6.1996-1212
Publication status	Published - 1996
Externally published	Yes
Event	AIAA Dynamics Specialists Conference, 1996 - Salt Lake City, United States Duration: 1996 Apr 18 → 1996 Apr 19

Other

Other	AIAA Dynamics Specialists Conference, 1996
Country/Territory	United States
City	Salt Lake City
Period	96/4/18 → 96/4/19

Bibliographical note

Publisher Copyright:
© 1996, American Institute of Aeronautics and Astronautics, Inc.

ASJC Scopus subject areas

Astronomy and Astrophysics
Aerospace Engineering

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10.2514/6.1996-1212

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title = "Control of bending oscillation of cantilevers via adaptive materials technology",

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.",

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doi = "10.2514/6.1996-1212",

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AU - Librescu, L.

AU - Meirovitch, L.

AU - Na, S. S.

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Y1 - 1996

N2 - 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.

AB - 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.

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DO - 10.2514/6.1996-1212

M3 - Paper

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T2 - AIAA Dynamics Specialists Conference, 1996

Y2 - 18 April 1996 through 19 April 1996

ER -

Control of bending oscillation of cantilevers via adaptive materials technology

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ASJC Scopus subject areas

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