A phenomenological constitutive law for the behaviour of ferroelectric ceramics

被引：106

作者：

Cocks, ACF ^{[1
]}

McMeeking, RM

机构：

[1] Univ Leicester, Dept Engn, Leicester LE1 7RH, Leics, England

[2] Univ Calif Santa Barbara, Dept Mech & Environm Engn, Santa Barbara, CA 93106 USA

来源：

FERROELECTRICS | 1999年 / 228卷 / 1-4期

关键词：

ferroelectric ceramics; constitutive laws; thermodynamics of solids;

D O I：

10.1080/00150199908226136

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A general thermodynamic structure for the constitutive behaviour of ferroelectric ceramics with the Perovskite structure is described. The state of the material is described in terms of the remanent strain and the remanent polarisation. A yield function is identified, such that changes in remanent strain and polarisation can only occur when the yield condition is satisfied. Simple forms of the Helmholtz free energy are presented, based on an understanding of the underlying micromechanical processes. The resulting hysteresis and butterfly loops pre dieted by this model are in good agreement with the general form of loops observed experimentally.

引用

页码：219 / 228

页数：10