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Non-Linear Constitutive Properties of Piezoelectric Ceramics

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Abstract

Experiments have been conducted to study the nonlinear constitutive properties of ferroelectric ceramics for large strain operation applications, where the mechanical behavior of the material dictates the overall electromechanical response of the devices. For this purpose, polarization and strain are measured continuously on a compression cuboid. Severe non-linear and hysteretic behavior is observed in these materials. An empirical formulation has been proposed to model the constitutive laws applicable to this non-linear deformation. Physical mechanism is provided, that is attributed to this constitutive law.

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Acknowledgments

Financial support for this work is provided by the Office of Naval Research, under the contract No: N00014-91-J-4024.

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Authors and Affiliations

  1. Materials Department, University of California, Santa Barbara, California, 93106, USA

    H. C. Cao & A. G. Evans

Authors
  1. H. C. Cao
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  2. A. G. Evans
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Cao, H.C., Evans, A.G. Non-Linear Constitutive Properties of Piezoelectric Ceramics. MRS Online Proceedings Library 276, 39–49 (1992). https://doi.org/10.1557/PROC-276-39

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  • DOI: https://doi.org/10.1557/PROC-276-39

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