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Proceedings Paper

Integrated electronic/material/structural modeling of a smart material
Author(s): Douglas K. Lindner; Virginia G. DeGiorgi; Sarah K. McDermott
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Paper Abstract

In this paper we develop an integrated model of the amplifier, actuator material, and structural dynamics of a smart material. Stacked electrostrictor actuators are driven by a PWM amplifier. These actuators are attached to a graphite epoxy composite base and they drive an alumina headmass. The whole device, designed from underwater acoustics, is potted. We model the actuators using nonlinear constitutive laws. These equations are integrated into a dynamic model of the amplifier. Then these equations are integrated with a dynamic model of the actuator. Finally, a finite element model is developed for the multilayered composite material that provides the dynamic response of the device. Using superelements, stiffness coefficients are extracted from the finite element model of the multilayered composite material.

Paper Details

Date Published: 6 June 1997
PDF: 11 pages
Proc. SPIE 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems, (6 June 1997); doi: 10.1117/12.275650
Show Author Affiliations
Douglas K. Lindner, Virginia Polytechnic Institute and State Univ. (United States)
Virginia G. DeGiorgi, Naval Research Lab. (United States)
Sarah K. McDermott, George Washington Univ. (United States)

Published in SPIE Proceedings Vol. 3041:
Smart Structures and Materials 1997: Smart Structures and Integrated Systems
Mark E. Regelbrugge, Editor(s)

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