Network Formalism for Modeling Functionally Gradient Piezoelectric Plates and Stacks and Simulations of RAINBOW Ceramic Actuators

Robert W. Schwartz, Missouri University of Science and Technology
A. Ballato
John Ballato

This document has been relocated to http://scholarsmine.mst.edu/mec_aereng_facwork/3446

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Abstract

A simple network representation is given for a stack of thin, homogeneous piezoelectric plates, executing a single thickness mode of motion. All plates may differ in thickness and material properties, including dielectric loss, ohmic conductivity, and viscous loss. Each plate is driven by a thickness-directed electric field, and all stack elements are connected electrically in series. Functionally gradient single plates and composites are readily modeled by the network, to a desired precision, using a sequence of circuit elements representing stepwise variations in material properties and layer thicknesses. Simulations of RAINBOW (reduced and internally biased oxide wafer) ceramics are given.