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Proceedings Paper

A model for frequency dependent characteristics of piezoceramic materials
Author(s): Wolfgang Seemann; Bulent Delibas; Arunachalakasi Arockiarajan
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Paper Abstract

Piezoceramic materials show nonlinear behavior when they are under high electrical and mechanical field. The nonlinearity is increasing when loading becomes rate or frequency dependent. In addition to understand quasi-static characteristics, dynamic behaviors of piezoelectric materials are also important in some special application. In this paper rate dependent behaviour of tetragonal perovskite type piezoceramic materials is simulated using a three-dimensional micromechanical model. Energy equation is used for the onset of domain switching with taking in to account the probability functions that have been used for the assumption of domain switching under critical electromechanical field. Also, rate dependent properties of piezoceramics are investigated by implementing various frequencies of cyclic loading during the simulations in which nucleation and propagation of domains during polarization switching have been modeled with the help of linear kinetics relations. Different amplitudes of alternating loadings are also applied with changing frequencies in order to understand the macroscopic behavior of piezoelectric and ferroelectric materials such as coercive field and remnant polarization and strain characterization under various loading situations. PIC 151 is chosen as a sample piezoelectric material because of the experimental data that the material has been already observed in some experiments in the literature. The results of simulations have been given in electric displacement versus electric field hysteresis and mechanical strain versus electrical field butterfly curves under different amplitude and frequencies of high electrical field with comparison of experimental ones.

Paper Details

Date Published: 16 May 2005
PDF: 12 pages
Proc. SPIE 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics, (16 May 2005); doi: 10.1117/12.599025
Show Author Affiliations
Wolfgang Seemann, Univ. of Karlsruhe (Germany)
Bulent Delibas, Kaiserslautern Univ. of Technology (Germany)
Arunachalakasi Arockiarajan, Kaiserslautern Univ. of Technology (Germany)

Published in SPIE Proceedings Vol. 5761:
Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics
William D. Armstrong, Editor(s)

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