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An RVE-based micromechanical analysis of fiber-reinforced composites considering fiber size dependency

机译:考虑纤维尺寸依赖性的基于RVE的纤维增强复合材料的微力学分析

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摘要

An RVE-based micromechanical elastic damage model considering fiber size dependency is presented to predict the effective elastic moduli and interfacial damage evolution in fiber-reinforced composites. To assess the validity of the present model, the predictions based on the proposed micromechanical elastic model are compared with Hashin's theoretical bounds [Hashin Z. Analysis of properties of fiber composites with anisotropic constituents. J Appl Mech: Trans ASME 1979;46:543-50]. The proposed micromechanical elastic damage model is then exercised under uniaxial loading conditions to show the overall elastic damage behavior of the proposed micromechanical framework and to illustrate fiber size effect on the behavior of the composites. Moreover, comparisons between the present prediction and experimental data are made to further illustrate the capability of the proposed micromechanical framework for predicting the elastic damage behavior of fiber-reinforced composites.
机译:提出了基于RVE的考虑纤维尺寸依赖性的微机械弹性损伤模型,以预测纤维增强复合材料的有效弹性模量和界面损伤演化。为了评估本模型的有效性,将基于所提出的微机械弹性模型的预测与Hashin的理论范围进行了比较[Hashin Z.具有各向异性成分的纤维复合材料的性能分析。 J Appl Mech:Trans ASME 1979; 46:543-50]。然后在单轴载荷条件下对提出的微机械弹性损伤模型进行了研究,以显示提出的微机械框架的整体弹性损伤行为,并说明了纤维尺寸对复合材料行为的影响。此外,目前的预测和实验数据之间进行比较,以进一步说明所提出的微力学框架预测纤维增强复合材料的弹性损伤行为的能力。

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