A new structure-related model to predict the permeability of non-crimp fabric preform
A new structure-related model to predict the permeability of non-crimp fabric preform
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一种新的结构相关模型来预测无屈曲织物预成型件的渗透性
DOI：
10.1177/0021998312462156
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发表时间：
2013-11
影响因子：
2.9
通讯作者：
Xuejian Jiao
中科院分区：
文献类型：
--
作者：
Haidong He;Yuxi Jia;Chengguo Wang;Xuejian Jiao
织物预制件的渗透性是分析液体复合材料模塑浸渍过程的关键输入参数。然而，渗透率预测是具有挑战性的，由于其复杂的依赖于织物结构。基于微通道截面的几何参数与压降之间的关系，提出了一种预测无卷曲织物预成型件渗透率的新的分析模型。该模型考虑了纤维束椭圆截面的宽度、高度、半长轴长度和纤维束间距四个结构参数。分别用所提出的解析模型和有限元模拟计算了单胞的磁导率。结果表明，纤维束之间的通道对织物的透气性起着重要的作用。单胞的结构参数对渗透率有重要影响。新的结构相关的渗透率模型可以准确地预测在一定范围内的无卷曲织物预成型体的渗透率。
The permeability of the fabric preform is a critical input parameter for analyzing the liquid composite molding impregnation process. However, the permeability prediction is challenging due to its complex dependence on the fabric structure. In this paper, a novel analytical model is developed to predict the permeability of non-crimp fabric preform based on the relation between the pressure drop and geometric parameters of the microchannel cross section. The model takes into account four structural parameters including the width, the height, the semi-major axis length of the ellipse section of fiber bundle and the distance between fiber bundles. The permeability of the unit cell is calculated by the presented analytical model and the finite element simulation, respectively. The results show that the channels between fiber bundles play an important role in determining the fabric permeability. The structural parameters of the unit cell have important effects on the permeability. The new structure-related permeability model can accurately predict the permeability of the non-crimp fabric preform in a certain range.
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影响因子：
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作者：
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通讯作者：
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DOI：
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DOI：
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发表时间：
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影响因子：
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作者：
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