A cohesive model of fatigue of ferroelectric materials under electro-mechanical cyclic loading

被引：0

作者：

Arias, I ^{[1
]}

Serebrinsky, S ^{[1
]}

Ortiz, M ^{[1
]}

机构：

[1] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA

来源：

SMART STRUCTURES AND MATERIALS 2004: ACTIVE MATERIALS: BEHAVIOR AND MECHANICS | 2004年 / 5387卷

关键词：

fatigue; nucleation; ferroelectrics; electric loading; mechanical loading;

D O I：

10.1117/12.540097

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A cohesive fatigue-crack nucleation and growth model for ferroelectric materials under electro-mechanical loading is presented. The central feature of the model is a hysteretic cohesive law which couples the mechanical and electrical fields. This law can be used in conjunction with general constitutive relations of bulk behavior, possibly including domain switching, in order to predict fatigue crack growth under arbitrary loading conditions. Another appealing feature of the model is its ability to predict fatigue-crack nucleation. Despite the scarcity and uncertainty of the experimental data, comparisons with PZT fatigue-life data are encouraging.

引用

页码：371 / 378

页数：8

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