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Determination of the effective conductivity of composites with spherical and spheroidal anisotropic particles and imperfect interfaces

机译:球形和球形各向异性颗粒和不完美界面复合材料的有效电导率的测定

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The present work aims to develop a micromechanical scheme to estimate the effective conductivity of isotropic particulate multiphase composites with imperfect interfaces between the matrix and inhomo-geneity phases. The interface can be either highly conducting or resistive, the inhomogeneities can be spherical or spheroidal, and the matrix phase is isotropic but the inhomogeneity phases can be anisotropic. By applying the generalized Mori-Tanaka (GMT) model based on the morphologically representative pattern (MRP) approach and by using the solution results obtained for auxiliary problems accounting for imperfect interfaces, the closed-form expression for the effective conductivity is obtained. Numerical results are provided to illustrate the dependence of the effective conductivity on the size and shape of inhomogeneities and to compare the estimations with the relevant upper and lower bounds.
机译:本工作旨在开发一种微机械方案,以估计在基质相和非均相之间界面不完善的各向同性颗粒多相复合材料的有效电导率。界面可以是高导电性或电阻性的,不均匀性可以是球形或球形,并且基体相是各向同性的,但不均匀性相可以是各向异性的。通过应用基于形态学代表图案(MRP)方法的广义Mori-Tanaka(GMT)模型,并使用针对界面不完整的辅助问题而获得的求解结果,可获得有效电导率的闭式表达式。提供了数值结果,以说明有效电导率对不均匀性的大小和形状的依赖性,并将估计值与相关的上下限进行比较。

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