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Determination of the influence of interfacial thermal resistance in a three phase composite using variational asymptotic based homogenization method

机译:基于变分渐近基于均质化方法测定三相复合物中界面热阻的影响

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摘要

A computational framework based on the Variational Asymptotic Method (VAM) has been developed to determine the effective thermal conductivity of carbon-coated inclusion in the three-phase metal-ceramic composites. In the model, perfect bonding temperature continuity conditions have been assumed between the matrix-interface and interface-inclusion boundaries. Both periodic and random distribution of inclusions have been considered in the study. Simulation results corresponding to homogenized conductivity have been compared with results from various existing analytical models. Results show good agreement between the model predictions and the analytical models. As an application, the framework has been used to investigate the influence of interface thickness, thermal conduction, and shape on the overall homogenized conductivities and the local fields in three-phase composites with coated inclusions.
机译:已经开发了基于变分渐性法(VAM)的计算框架以确定三相金属 - 陶瓷复合材料中碳涂覆的夹杂物的有效导热率。在模型中,在矩阵接口和界面夹杂度边界之间假设了完美的键合温度连续性条件。在研究中已经考虑了周期性和随机分布的夹杂物。将与各种现有分析模型的结果进行比较对应于均质电导率的仿真结果。结果显示模型预测和分析模型之间的良好一致性。作为应用,框架已被用于研究界面厚度,热传导和形状对整个均匀化电导率和具有涂覆夹杂物的三相复合材料中的局部的影响。

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