Effective moduli of ellipsoidal particle reinforced piezoelectric composites with imperfect interfaces

Effective moduli of ellipsoidal particle reinforced piezoelectric composites with imperfect interfaces
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不完善界面椭球颗粒增强压电复合材料的有效模量

DOI:
10.1016/j.jmps.2013.12.007
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发表时间:
2014-04
影响因子:
5.3
通讯作者:
Ch. Zhang
Ch. Zhang
中科院分区:
工程技术2区
文献类型:
--
作者:
Z. Wang;J. Zhu;X.Y. Jin;W.Q. Chen;Ch. Zhang

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研究了椭球颗粒不完全嵌入基体的压电复合材料的有效性能。稀释近似方法,Mori-Tanaka方法,自洽方法,和差分格式都修改为结合不完善预测的有效弹性,介电和压电模量的复合材料。借助修正的压电Eshelby张量严格推导了相应的公式。数值例子被认为是说明不完美的界面上的压电复合材料的有效性能的影响。结果表明,通过适当选择界面参数,可以实现与现有实验的良好一致性。这阐明了在建模中包含不完美接口的重要性。由于界面缺陷的特定尺寸依赖特性也进行了数值研究。
The effective properties of piezoelectric composites with ellipsoidal particles embedded imperfectly in the matrix are investigated. The dilute approximation method, the Mori–Tanaka method, the self-consistent method, and the differential scheme are all modified to incorporate the bonding imperfection to predict the effective elastic, dielectric, and piezoelectric moduli of the composite. The corresponding formulae are rigorously derived with the help of the modified piezoelectric Eshelby tensor. Numerical examples are considered to illustrate the effect of imperfect interfaces on the effective properties of piezoelectric composites. It is found that good agreement with the existing experiments can be achieved by properly selecting the interface parameters. This clarifies the importance of the inclusion of imperfect interfaces in the modeling. The particular size-dependent characteristic due to the interface imperfection is also investigated numerically.
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