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Proceedings Paper

Control of shapes of elastic plates using embedded piezoelectric actuators
Author(s): Sunil Kumar Agrawal; Daqun Tong; K. Nagaraja
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Paper Abstract

Future technologies in microsensing, microactuation, active changes in shapes of aerofoils and turbine blades justify and necessitate a comprehensive study of piezoactuators for shape control of structures. Piezo materials have the property to develop strain on applying voltage and voltage on applying strain, hence, these materials are useful both as sensors and actuators. If a piezoactuator is bonded to a substrate plate, on applying voltages, the resulting strain in the actuator induces a deflection in the plate. This deflection is a function of geometry, material properties of actuator and substrate, layout of piezoactuators, and voltage inputs to the actuators. The objectives of this paper are: (a) to develop a mathematical model for deflection of a thin plate embedded with piezo actuators using elastic plate theory, (b) to compute plate deflection by solving the mathematical model using finite difference technique, and (c) to estimate optimal actuation voltages to match the deflection of the plate to a desired deflection.

Paper Details

Date Published: 6 May 1994
PDF: 8 pages
Proc. SPIE 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems, (6 May 1994); doi: 10.1117/12.175207
Show Author Affiliations
Sunil Kumar Agrawal, Ohio Univ. (United States)
Daqun Tong, Ohio Univ. (United States)
K. Nagaraja, Air Force Wright Lab. (United States)

Published in SPIE Proceedings Vol. 2190:
Smart Structures and Materials 1994: Smart Structures and Intelligent Systems
Nesbitt W. Hagood, Editor(s)

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