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首页> 外文期刊>Journal of Composite Materials >Evaluation of elastic properties of interpenetrating phase composites by mesh-free method
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Evaluation of elastic properties of interpenetrating phase composites by mesh-free method

机译：无网格法评价互穿相复合材料的弹性

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摘要

Interpenetrating phase composites can be defined as multiphase materials in which each phase is three-dimensionally interconnected throughout the structure. The unique geometry of the reinforcement offers improved combination of mechanical and physical properties. Over the years, a lot of efforts have been put to study these composites experimentally. However, due to the complexity in microstructure and randomness in behaviour of interpenetrating phase composite, the modelling of these composites has not been sufficiently studied so far. Therefore, in this study, two models, namely, unit cell and self-consistent models have been presented to find the elastic properties of interpenetrating phase composites. All influencing parameters such as volume fraction and random geometry are duly incorporated in these models. These models are analysed by a mesh-free method known as element-free Galerkin method. The effective properties of these composites are calculated by an effective medium approximation approach. The real microstructure of interpenetrating phase composites is partially interpenetrating and partially particulate in nature; hence, a control parameter has been included in the model to simulate this behaviour. The main feature of the proposed unit cell model is that it is easy to implement and less time consuming as compared to three-dimensional existing model and characterises all the governing features of interpenetrating phase composite microstructure.
机译：互穿相复合材料可以定义为多相材料，其中每个相在整个结构中三维互连。增强件的独特几何形状可改善机械性能和物理性能的组合。多年来，人们已经进行了大量的努力来通过实验研究这些复合材料。然而，由于互穿相复合材料的微观结构的复杂性和行为的随机性，到目前为止，尚未对这些复合材料的建模进行充分的研究。因此，在这项研究中，提出了两种模型，即晶胞模型和自洽模型，以发现互穿相复合材料的弹性。所有影响参数（例如体积分数和随机几何形状）均已适当纳入这些模型中。通过无网格方法（称为无元素Galerkin方法）分析这些模型。这些复合材料的有效性能是通过有效的介质近似方法计算的。互穿相复合材料的真正微观结构本质上是部分互穿和部分颗粒。因此，控制参数已包含在模型中以模拟此行为。所提出的晶胞模型的主要特征是，与三维现有模型相比，它易于实现且耗时少，并且表征了互穿相复合微结构的所有控制特征。

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