Electroelastic behavior of piezoelectric composites with coated reinforcements: Micromechanical approach and applications
Electroelastic behavior of piezoelectric composites with coated reinforcements: Micromechanical approach and applications
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DOI：
10.1016/j.ijsolstr.2009.05.019
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发表时间：
2009-10
影响因子：
3.6
通讯作者：
F. Dinzart;H. Sabar
中科院分区：
文献类型：
--
作者：
F. Dinzart;H. Sabar
本文提出了一种用于估计涂覆增强压电复合材料电弹性性能的微观力学模型。压电涂层是一种薄层，具有不同于夹杂物和基体的主动电弹性特性。设计了基于格林函数技术和界面算子的微力学方法来解决电弹性非均匀包覆物问题。通过Mori-Tanaka的模型得到了含薄包覆夹杂的压电复合材料的有效性能。对负责机电耦合的电弹性模量进行了数值研究，并将其作为包覆夹杂物体积分数和特性的函数。并与已有的圆柱形和椭圆形包覆夹杂的解析和数值结果进行了比较。
In this work, a micromechanical model for the estimate of the electroelastic behavior of the piezoelectric composites with coated reinforcements is proposed. The piezoelectric coating is considered as a thin layer with active electroelastic properties different from those of the inclusion and the matrix. The micromechanical approach based on the Green’s functions technique and on the interfacial operators is designed for solving the electroelasticity inhomogeneous coated inclusion problem. The effective properties of a piezoelectric composite containing thinly coated inclusions are obtained through the Mori–Tanaka’s model. Numerical investigations into electroelastic moduli responsible for the electromechanical coupling are presented as functions of the volume fraction and characteristics of the coated inclusions. Comparisons with existing analytical and numerical results are presented for cylindrical and elliptic coated inclusions.