On the modelling of nonlinear electro‐mechanical coupled ferroelectrica
On the modelling of nonlinear electro‐mechanical coupled ferroelectrica
复制标题
非线性机电耦合铁电体的建模
DOI：
10.1002/pamm.200310382
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
J. Schröder
中科院分区：
文献类型：
--
作者：
H. Romanowski;J. Schröder
在这篇文章中，我们讨论了假设横向各向同性铁电晶体的简单唯象模型。我们专注于耦合机电行为的理论公式和数值处理。本研究的主要目标是捕捉非线性铁电的主要特征，如极化电场和二次应变电场（蝶形）磁滞回线。历史依赖性通过两个内部变量建模，不可逆极化及其共轭不可逆电场。
In this contribution we discuss a simple phenomenological model for an assumed transversely isotropic ferroelectric crystal. We focus on the theoretical formulation and numerical treatment of the coupled electro‐mechanical behaviour. The main goal of this investigation is to capture the main characteristics of nonlinear ferroelectrica, such as the polarization‐electric‐field and the quadratic strain‐electric‐field (butterfly) hysteresis loops. The history dependency is modelled via two internal variables, the irreversible polarization and its conjugated irreversible electric‐field.