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RESEARCH PAPERS

Formulation of a Laminated Shell Theory Incorporating Embedded Distributed Actuators

[+] Author and Article Information
J. Jia, C. A. Rogers

Smart Materials and Structures Laboratory, Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0238

J. Mech. Des 112(4), 596-604 (Dec 01, 1990) (9 pages) doi:10.1115/1.2912652 History: Received February 01, 1990; Online June 02, 2008

Abstract

Smart materials have created new paradigms for structural design by introducing new concepts for vibration, damage, and structural control. Shape memory alloy reinforced composites are some of the newest and most versatile of this category of novel materials. They have shown tremendous versatility to adaptively and actively tailor mechanical and physical properties of structures and to perform shape and damage control. Moreover, the have generated new concepts for acoustic and vibration control. However, the unique behavior of the shape memory alloy fibers used as active elements within the composite also poses some difficult and interesting problems for describing the mechanical behavior of SMA reinforced structures. This paper will describe the formulation of a generalized laminate shell theory that incorporates embedded distributed actuators, i.e., shape memory alloy fibers or piezoelectric films. The theories consider the nonlinear strain-temperature-stress coupling for shape memory alloy actuators and the simplifications for analyzing piezoelectric actuators. Some of the computational difficulties of predicting the behavior of SMA reinforced shells will be discussed.

Copyright © 1990 by The American Society of Mechanical Engineers
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