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Non-Linear Constitutive Properties of Piezoelectric Ceramics

Published online by Cambridge University Press:  15 February 2011

H. C. Cao
Affiliation:
Materials Department, University of California, Santa Barbara, California 93106
A. G. Evans
Affiliation:
Materials Department, University of California, Santa Barbara, California 93106
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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.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

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