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The Effective Conductivity of Multiphase Composites with Imperfect Thermal Contact at Constituent Interfaces

机译：成分界面热接触不完善的多相复合材料的有效电导率

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摘要

This paper studies the effective thermal conductivity of multiphase composite in which a thermal boundary resistance exists at constituent interfaces. Based on the theoretical framework of conductivity for binary system composites in the presence of a thermal contact resistance between matrix and inclusion given by Y. Benveniste and T. Miloh (1986), the fundamental concept is generalized for the case of multiphase composites with imperfect contact which permits a temperature discontinuity between matrix and inclusions of different phases. A micromechanics model, the "generalized self-consistent scheme (GSCS)" based on a particle-matrix embedding in the effective medium, is generalized to evaluate the effective conductivity of multiphase medium with imperfect thermal contact at constituent interfaces. Numerical results are given for three-phase particulate composites with spherical particles to illustrate the effect of imperfect interfaces on the effective thermal conductivity of multiphase composites.
机译：本文研究了在组成界面处存在热边界电阻的多相复合材料的有效导热系数。基于由Y. Benveniste和T. Miloh（1986）给出的在基体与夹杂物之间存在热接触电阻的情况下，二元体系复合材料的电导率的理论框架，对具有不完美接触的多相复合材料的情况推广了基本概念这允许基质和不同相的夹杂物之间的温度不连续。总结了一种微力学模型，即基于粒子矩阵嵌入有效介质中的“广义自洽方案（GSCS）”，以评估在组成界面处存在不完美热接触的多相介质的有效电导率。给出了具有球形颗粒的三相颗粒复合材料的数值结果，以说明不完善的界面对多相复合材料有效导热系数的影响。

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