Control of shapes of elastic plates using embedded piezoelectric actuators

Sunil Kumar Agrawal; Daqun Tong; K. Nagaraja

doi:10.1117/12.175207

6 May 1994 Control of shapes of elastic plates using embedded piezoelectric actuators

Sunil Kumar Agrawal, Daqun Tong, K. Nagaraja

Proceedings Volume 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems; (1994) https://doi.org/10.1117/12.175207
Event: 1994 North American Conference on Smart Structures and Materials, 1994, Orlando, FL, United States

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.

Citation Download Citation

Sunil Kumar Agrawal, Daqun Tong, and K. Nagaraja "Control of shapes of elastic plates using embedded piezoelectric actuators", Proc. SPIE 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems, (6 May 1994); https://doi.org/10.1117/12.175207

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