Finite Element Modeling of Polarization Switching in Electro-Mechanically Coupled Materials

- Journal title : Transactions of the Korean Society of Mechanical Engineers A
- Volume 25, Issue 11, 2001, pp.1697-1704
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-A.2001.25.11.1697

Title & Authors

Finite Element Modeling of Polarization Switching in Electro-Mechanically Coupled Materials

Kim, Sang-Ju;

Kim, Sang-Ju;

Abstract

A finite element model for polarization switching in electro-mechanically coupled materials is proposed and applied to predict the switching behavior of a two-dimensional ferroelectric ceramic. A complicated micro-structure existing in the material is modeled as il continuum body and a simple 3 node triangle finite element with nodal displacement and voltage degrees of freedom is used for a finite element analysis. The elements use nonlinear constitutive equations, switching criterion and kinetic relation, fur representation of material response at strong electric and stress fields. The polarization state of the material is represented by internal variables in each element, which are updated at each simulation step based on the proposed constitutive equations. The model reproduces strain and electric displacement hysteresis loops observed in the material.

Keywords

FEM;Electro-Mechanical Coupling;Polarization Switching;Ferroelectric Ceramics;

Language

Korean

Cited by

References

1.

Jona, F. and Shirane, G., 1962, Ferroelectric Crystals, Pergamon Press

2.

Hwang, S. C., Lynch, C. S. and McMeeking, R. M., 1995, 'Ferroelectric/Ferroelastic Interactions and a Polarization Switching Model,' Acta Metallurgica Materialia, Vol. 43, No. 5, pp. 2073-2084

3.

Huo, Y. and Jiang, Q., 1998, 'Medeling of Domain Switching in Ferroelectric Ceramics: an Example,' International Journal of Solids and Structures, Vol. 35, pp. 1339-1353

4.

Kim, S. J., 2000, 'A One-Dimensional Continuum Model for Thermoelectric Phase Transformations in Ferroelectrics,' International Journal of Solids and Structures, Vol. 37, pp. 1145-1164

5.

김상주, 1998, '강유전체의 열전거동에 대한 1차원 연속체 모델,' 대한기계학회 추계학술대회 논문집 A, pp. 493-498

6.

Jaffe, B., Cook, W. R. and Jaffe, W. R., 1971, Piezoelectric Ceramics, Academic Press

7.

Lynch, C. S., 1996, 'The Effect of Uniaxial Stress on the Electromechanical Response of 8/65/35 PLZT,' Acta Materialia, Vol. 44, pp. 4137-4148

8.

Scharfele, A. and Hardtl, K. H., 1996, 'Ferroelastic Properties of lead zirconate titanate ceramics,' Journal of the American Ceramic Society, Vol. 79, pp. 2637-2640