In this article, we propose a random fiber configuration method to set up quasi-realistic geometric models of the fibrous tow in reinforcement. Finite element method is applied to simulate the injection of resin at dual scales (both intra and inter tows, 2D and 3D models). Permeabilities of dual scales in three directions (in horizonal, vertical and longitudinal directions) are also explored. The influence of variant structure parameters on the permeability is discussed in the meantime. Flow front tracking considering surface tension effect based on the dual-scale model is carried out to predict resin flow through the fibrous reinforcement.

中文翻译：

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双尺度树脂灌注及增强结构效应的拟真实数值模拟研究

在本文中，我们提出了一种随机纤维配置方法来建立增强纤维丝束的准真实几何模型。有限元方法用于模拟双尺度下的树脂注射（内丝束和丝束间，2D 和 3D 模型）。还探讨了三个方向（水平、垂直和纵向）双尺度的渗透率。同时讨论了不同结构参数对渗透率的影响。进行基于双尺度模型的考虑表面张力效应的流动前沿跟踪，以预测通过纤维增强材料的树脂流动。