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Proceedings Paper

Modeling and dynamic behavior of rotating blades carrying a tip mass and incorporating adaptive capabilities
Author(s): Ohseop Song; Liviu I. Librescu; Hong-Bae Kim
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Paper Abstract

The problems of the mathematical modeling and dynamical behavior of rotating blades carrying a tip mass and incorporating adaptive capabilities are considered. The blade is modeled as a thin-walled beam which encompasses features such as the anisotropy, transverse shear, secondary warping and includes the centrifugal and Coriolis force fields. In addition, the adaptive capabilities provided by a system of piezoactuators bonded or embedded into the structure are also implemented. Based on the converse piezoelectric effect, the piezoactuators produce a localized strain field in response to an applied voltage, and as a result, an adaptive change of the dynamic response characteristics is obtained. A combined feedback control law relating the piezoelectrically induced bending moment at the beam tip with the kinematical response quantities appropriately selected is used, and its beneficial effects upon the closed-loop eigenvibration characteristics are highlighted.

Paper Details

Date Published: 13 June 1997
PDF: 10 pages
Proc. SPIE 3039, Smart Structures and Materials 1997: Mathematics and Control in Smart Structures, (13 June 1997); doi: 10.1117/12.276567
Show Author Affiliations
Ohseop Song, Choong-Nam National Univ. (South Korea)
Liviu I. Librescu, Virginia Polytechnic Institute and State Univ. (United States)
Hong-Bae Kim, Choong-Nam National Univ. (South Korea)


Published in SPIE Proceedings Vol. 3039:
Smart Structures and Materials 1997: Mathematics and Control in Smart Structures
Vasundara V. Varadan; Jagdish Chandra, Editor(s)

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