Effective Properties of Multi-layered Multi-functional Composites
Effective Properties of Multi-layered Multi-functional Composites
复制标题
多层多功能复合材料的有效性能
DOI：
10.1163/156855109x428817
复制
发表时间：
2009
影响因子：
2.9
通讯作者：
Jin
中科院分区：
文献类型：
--
作者：
Byeong;A. Baltazar;Jin
提出了一种计算一般各向异性多层复合材料有效电磁-热弹性能的矩阵方法。物理变量分为两组：一组满足层间界面的连续性，另一组满足平均层间兼容性(这也是准确的)。将耦合的电磁-热-弹性本构方程重新组合成子矩阵，得到了具有耦合物理效应的多层复合材料有效性质的简明而精确的矩阵表达式。将纯弹性多层膜的计算结果与其他理论方法的计算结果进行了比较，验证了所提方法的有效性。给出了PZT-石墨/环氧复合材料和BaTiO_3-CoFe_2O_4多层膜的例子，它们分别具有压电热弹性和磁电性质。结果表明，通过将压电材料和压磁材料组合在一个多层结构中，可以实现强大的磁电效应。将BaTiO_3-CoFe_2O_4多层膜的磁电系数与相同成分的纤维和颗粒复合材料的磁电系数进行了比较。
A matrix method for evaluating effective electro-magneto-thermo-elastic properties of a generally anisotropic multilayered composite is presented. Physical variables are categorized into two groups: one that satisfies the continuity across the interface between layers and another that satisfies an average interlayer compatibility (which is also exact). The coupled electro-magneto-thermo-elastic constitutive equation is accordingly reassembled into submatrices, which leads to the derivation of concise and exact matrix expressions for effective properties of a multilayered composite having the coupled physical effects. Comparing the results for a purely elastic multiplayer with those from other theoretical approaches validates the developed method. Examples are given for a PZT-graphite/epoxy composite and a BaTiO3–CoFe2O4 multilayer which exhibit piezo-thermoelastic and magnetoelectric properties, respectively. The result shows how a strong magnetoelectric effect can be achieved by combining piezoelectric and piezomagnetic materials in a multilayered structure. The magnetoelectric coefficient of the BaTiO3–CoFe2O4 multilayer is compared with those for fibrous and particulate composites fabricated with the same constituents.
影响因子：
8.6
作者：
Nan, CW;Liu, G;Chen, HD
通讯作者：
Chen, HD