A NONLINEAR MULTI-FIELD COUPLING FINITE ELEMENT METHOD FOR POLARIZATION SWITCHING IN FERROELECTRICS

被引：0

作者：

Wang, Jie ^{[1
]}

Kamlah, Marc ^{[1
]}

机构：

[1] Forschungszentrum Karlsruhe, Inst Mat Res 2, D-76021 Karlsruhe, Germany

来源：

SMASIS2008: PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE STRUCTURES AND INTELLIGENT SYSTEMS - 2008, VOL 1 | 2009年

关键词：

PHASE FIELD SIMULATIONS; DOMAIN EVOLUTION; FRACTURE-TOUGHNESS; ELECTRIC-FIELD; MODEL; POLYCRYSTALS; CERAMICS; IMPLEMENTATION; HYSTERESIS; BEHAVIOR;

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

A three-dimensional nonlinear finite element formulation for ferroelectric materials is developed based on a principle of virtual work. The formulation includes the coupling of three physical fields, namely polarization field, electric field and strain field. The developed finite element formulation is employed to investigate the polarization distribution near a flaw in a ferroelectric single crystal under mechanical loadings. It is found that the polarization switching takes place near the flaw tip if the loadings exceed a critical value. In the simulation, we do not take any prior assumptions, i.e. without any switching criterion, on the polarization switching. The polarization switching is a result of the minimization of the total energy in the simulated system.

引用

页码：173 / 179

页数：7

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