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Proceedings Paper

Vibrational behavior of rotating helicopter blades incorporating adaptive capabilities
Author(s): Ohseop Song; Liviu I. Librescu
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Paper Abstract

An integrated distributed actuator design methodology based upon the converse piezoelectric effect and aimed at actively controlling the in-vacuo eigenvibration characteristics of rotating helicopter blades is presented. The system of piezoelectric actuators bonded or embedded into the structure produces a localized strain field in response to an applied voltage and, as a result, it yields an adaptive change of dynamic response characteristics. The helicopter blade is modeled as a thin/thick walled closed cross-section untwisted cantilevered beam rotating with constant angular velocity. The considered numerical illustrations reveal the power of the adaptive technology to control the dynamic characteristics of rotating blade structures and, as a result, to avoid their structural resonance as well as any of their dynamic instabilities.

Paper Details

Date Published: 8 September 1993
PDF: 14 pages
Proc. SPIE 1917, Smart Structures and Materials 1993: Smart Structures and Intelligent Systems, (8 September 1993); doi: 10.1117/12.152773
Show Author Affiliations
Ohseop Song, Virginia Polytechnic Institute and State Univ. (South Korea)
Liviu I. Librescu, Virginia Polytechnic Institute and State Univ. (United States)

Published in SPIE Proceedings Vol. 1917:
Smart Structures and Materials 1993: Smart Structures and Intelligent Systems
Nesbitt W. Hagood; Gareth J. Knowles, Editor(s)

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