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Numerical Simulation of Edge Effect in Resin Transfer Molding for Plain-weave Fabric
Fibers and Polymers ( IF 2.5 ) Pub Date : 2020-10-22 , DOI: 10.1007/s12221-020-9991-8
Wenkai Yang , Shihong Lu , Wenhao Liu

Plain-weave fabric is a kind of fiber preform which has been commonly used in resin transfer molding (RTM) to manufacture polymer composites. However, the edge area of plain-weave fabric is easy to shed yarns which will cause the uneven distribution of permeability between edge channel and center of mold in filling process of RTM. Meanwhile, the uneven distribution of permeability will cause the edge effect and seriously affect the final quality of composite materials. In this paper, a method to numerically calculate the permeability of edge channel which fully considers the edge area of plain-weave fabric is proposed. The experiment and simulation of edge effect in filling process are performed. The results show that the simulation of edge effect which applies the edge channel’s permeability calculated by this method are in good agreement with the experimental results. The research in this paper is meaningful to improve the accuracy of edge effect simulation so as to provide a reference for the design of mold structure.



中文翻译:

平纹织物树脂传递模塑中边缘效应的数值模拟

平纹织物是一种纤维预成型件,通常在树脂传递模塑(RTM)中用于制造聚合物复合材料。但是,平纹织物的边缘区域容易脱落纱线,这将导致RTM的填充过程中边缘通道和模具中心之间的渗透性分布不均匀。同时,渗透率分布不均会引起边缘效应,严重影响复合材料的最终质量。提出了一种数值计算边缘通道渗透率的方法,该方法充分考虑了平纹织物的边缘面积。进行了填充过程中边缘效应的实验和仿真。结果表明,利用该方法计算出的边缘通道渗透率的边缘效应模拟与实验结果吻合良好。本文的研究对于提高边缘效应仿真的准确性具有重要意义,为模具结构设计提供参考。

更新日期:2020-10-26
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