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Network formalism for modeling functionally gradient piezoelectric plates and stacks and simulations of RAINBOW ceramic actuators

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3 Author(s)
Ballato, J. ; Dept. of Ceramic & Mater. Eng., Clemson Univ., SC, USA ; Schwartz, R. ; Ballato, A.

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.

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Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:48 ,  Issue: 2 )