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首页> 外文期刊>Journal of thermal stresses >CLOSED-FORM THERMOELASTIC MODULI OF A PERIODIC THREE-PHASE FIBER-REINFORCED COMPOSITE
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CLOSED-FORM THERMOELASTIC MODULI OF A PERIODIC THREE-PHASE FIBER-REINFORCED COMPOSITE

机译：周期三相纤维增强复合材料的闭式热弹性模量

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In previous works, using the asymptotic homogenization method (AHM), analytical formulae have been obtained for all global elastic constants of a binary fiber composite with perfect interfaces. In many cases of interest the perfect interphase is not an adequate model and it is necessary to include in the analytical models one or more interphases separating the reinforcement inclusion phase from the host matrix phase. In this article, an extension of AHM to thermoelastic heterogeneous problems is given. A simple closed form of effective properties for a three-phase unidirectional transversely isotropic composite is presented. By using homogenization schemes for periodic media, the local problems are solved and effective thermoelastic properties moduli are determined. The method is based on the assumption that the scale ratio between the periodic cell and the whole composite tends to zero. New universal relations for the three-phase thermoelastic composite are found from the AHM. In order to analyze the interphase effect, the effective thermoelastic moduli are compared with some theoretical approaches and experimental results reported in the literature.
机译：在以前的工作中，使用渐近均匀化方法（AHM），已经获得了具有完美界面的二元纤维复合材料的所有全局弹性常数的解析公式。在许多感兴趣的情况下，完美的中间相并不是一个适当的模型，必须在分析模型中包含一个或多个将增强夹杂物相与基质基质相分离的中间相。在本文中，将AHM扩展到热弹性非均质问题。提出了三相单向横向各向同性复合材料有效特性的简单封闭形式。通过对周期介质使用均化方案，解决了局部问题并确定了有效的热弹性模量。该方法基于以下假设：周期单元格与整个复合材料之间的比例比例趋于零。从AHM中发现了三相热弹性复合材料的新通用关系。为了分析相间效应，将有效的热弹性模量与文献中报道的一些理论方法和实验结果进行了比较。

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