Thermo-Electro-Mechanical Behavior of Ferroelectric Materials Part II: Introduction of Rate and Self-Heating Effects

Author:

Weiland Lisa Mauck1,Lynch Christopher S.2

Affiliation:

1. The G.W. Woodruff School of Mechanical Engineering, The Georgia Institute of Technology, Atlanta, Georgia 30332-0405, USA,

2. The G.W. Woodruff School of Mechanical Engineering, The Georgia Institute of Technology, Atlanta, Georgia 30332-0405, USA

Abstract

A micro-electro-mechanical model of the behavior of piezoelectric ceramics including thermal, rate, and self-heating effects is presented and simulations are compared to experimental data. The rate dependent model is an extension of an earlier rate independent model. Results include analytical and numerical investigations of the behavior of piezoelectric ceramics. The model is based on physical mechanisms and includes elastic, dielectric, and piezoelectric anisotropy. Moreover, the model is based on an internal energy approach so that work-energy relations may be directly applied. Special consideration of potential physical mechanisms responsible for material behavior in the largely unexplored intermediate rate regime (50-1000 Hz) at high fields is given. Results from the model give insight into material behavior.

Publisher

SAGE Publications

Subject

Mechanical Engineering,General Materials Science

Reference31 articles.

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2. Nonlinear Deformation of Ferroelectric Ceramics

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4. A micro-electro-mechanical model for polarization switching of ferroelectric materials

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