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Proceedings Paper

Micromechanical simulation of piezoelectric materials using probability functions
Author(s): Wolfgang Seemann; Arunchalakasi Arockiarajan; Buelent Delibas
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Paper Abstract

Piezoelectric materials exhibit nonlinear behavior when subjected to large electric or mechanical loads. This strong nonlinear behavior is induced by localized polarization switching at the domain level. In this work, certain piezoelectric materials having tetragonal perovskite type microstructure characteristics are simulated using micromechanical approach in which linear constitutive and nonlinear switching models are done in each and every grain of the material. Uniaxial loading is applied in the simulation. The effect of different domain switchings (90° or 180° domain switching for tetragonal perovskite structure) due to energy differences, different probability functions, different statistical random generators and material parameters are analysed. The response of the bulk ceramics is predicted by averaging the response of individual grains that are considered to be statistically random in orientation. The observed strain and electric displacement hysteresis loops for the piezoelectric and ferroelectric materials are compared with previous experimental works described in the literature.

Paper Details

Date Published: 21 July 2004
PDF: 9 pages
Proc. SPIE 5387, Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics, (21 July 2004); doi: 10.1117/12.544501
Show Author Affiliations
Wolfgang Seemann, Univ. Karlsruhe (Germany)
Arunchalakasi Arockiarajan, Technische Univ. Kaiserslautern (Germany)
Buelent Delibas, Technische Univ. Kaiserslautern (Germany)

Published in SPIE Proceedings Vol. 5387:
Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics
Dimitris C. Lagoudas, Editor(s)

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