Abstract In this study, the effective elastic modulus (Ec) of a cellulose nanocrystal fiber reinforced polymer composite was evaluated using the Mori-Tanaka and finite element (FE) model. The FE model was generated using a representative volume element with a periodic boundary condition. The mass fractions of the fiber in the composites (MFf) were set to 1, 2, and 3 wt.%. Elastic modulus values for interphase were input and were either uniform or exhibited a gradient. The E c for the uniform interphase region increased significantly with MFf, but was relatively low for interphase regions exhibiting a gradient. The results show that interphase parameters must be considered carefully when predicting Ec using the FE model.

中文翻译：

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界面参数对纤维素纳米晶纤维增强聚合物复合材料弹性模量预测的影响

摘要 在本研究中，使用 Mori-Tanaka 和有限元 (FE) 模型评估了纤维素纳米晶纤维增强聚合物复合材料的有效弹性模量 (Ec)。有限元模型是使用具有周期性边界条件的代表性体积元素生成的。复合材料中纤维的质量分数 (MFf) 设置为 1、2 和 3 wt.%。界面的弹性模量值被输入并且是均匀的或表现出梯度。均匀界面区域的 E c 随 MFf 显着增加，但对于呈现梯度的界面区域则相对较低。结果表明，在使用有限元模型预测 Ec 时必须仔细考虑相间参数。