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Proceedings Paper

Modeling of piezoelectric multilayer structures
Author(s): Horacio Sosa; Forouza Pourki
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Paper Abstract

A method to study electromechanical behavior in piezoelectric laminated structures is presented. An accurate electromechanical description is mathematically involved, requiring quite often the adoption of ad hoc and unrealistic assumptions. An alternate approach to existing techniques is proposed in this paper. Emphasis is placed in a two-dimensional formulation to describe the behavior of electroelastic layered media. The methodology consists of rewriting the field equations of piezoelectricity in terms of a combination of certain electrical and mechanical variables collected into a state vector. Integral transformations are used to produce an ordinary differential equation for the state vector, whose solution is given in terms of a transfer matrix. The virtue of this approach is that the transfer matrix allows us to furnish information on local as well as global electromechanical behavior with equal ease. The resulting consequences of the methodology are the prediction of changes of geometry that will occur in a structure in response to a controlled command, and a more efficient means of structural actuation.

Paper Details

Date Published: 23 July 1993
PDF: 9 pages
Proc. SPIE 1916, Smart Structures and Materials 1993: Smart Materials, (23 July 1993); doi: 10.1117/12.148477
Show Author Affiliations
Horacio Sosa, Drexel Univ. (United States)
Forouza Pourki, Drexel Univ. (United States)

Published in SPIE Proceedings Vol. 1916:
Smart Structures and Materials 1993: Smart Materials
Vijay K. Varadan, Editor(s)

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