A numerical model of unidirectional carbon fiber-reinforced polymer composite material at the micro-level has been introduced to complement the experiment and analytical model in estimating the elastic properties of composite material. Idealization was performed in the model by using a periodically distributed fiber following square and hexagonal packing arrangement. The determination of the unit cell configuration was made by considering the periodic boundary condition associated with the selected configuration. The idealization using periodic fiber arrangement was proved to adequately estimate the elastic properties of composite material. The hexagonal model was proved to solve the drawbacks of the square model in estimating the shear properties with error reduction up to 50 % in comparison to the square model.

引入了单向碳纤维增强聚合物复合材料微观水平的数值模型，以补充估计复合材料弹性性能的实验和分析模型。通过使用遵循正方形和六边形堆积排列的周期性分布的纤维，在模型中进行了理想化处理。通过考虑与所选配置相关的周期性边界条件来确定晶胞配置。使用周期性纤维排列的理想化被证明足以估计复合材料的弹性。六边形模型被证明解决了正方形模型在估计剪切特性方面的缺点，与正方形模型相比，误差降低了50％。