Micromechanics-based prediction of the effective properties of piezoelectric composite having interfacial imperfections

被引：11

作者：

Lee, Sangryun ^{[1
]}

Jung, Jiyoung ^{[1
]}

Ryu, Seunghwa ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mech Engn, 291 Daehak Ro, Daejeon 34141, South Korea

来源：

COMPOSITE STRUCTURES | 2020年 / 240卷

基金：

新加坡国家研究基金会;

关键词：

Piezoelectric composite; Eshelby tensor; Interfacial damage; Effective modulus; EFFECTIVE CONDUCTIVITY; REINFORCED COMPOSITES; THERMAL-CONDUCTIVITY; ESHELBY TENSORS; MODULI; MODEL;

D O I：

10.1016/j.compstruct.2020.112076

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We derive an analytical expression to predict the effective properties of a particulate-reinforced piezoelectric composite with interfacial imperfections using a micromechanics-based mean-field approach. We correctly derive the analytical formula of the modified Eshelby tensor, the modified concentration tensor, and the effective property equations based on the modified Mori-Tanaka method in the presence of interfacial imperfections. Our results are validated against finite element analyses (FEA) for the entire range of interfacial damage levels, from a perfect to a completely disconnected and insulated interface. For the facile evaluation of the nontrivial tensorial equations, we adopt the Mandel notation to perform tensor operations with 9 x 9 symmetric matrix operations. We apply the method to predict the effective properties of a representative piezoelectric composite consisting of polyvinylidene fluoride (PVDF) and SiC reinforcements.

引用

页数：15

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