Modelling defect formation in textiles during the double diaphragm forming process
Modelling defect formation in textiles during the double diaphragm forming process
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DOI：
10.1016/j.compositesb.2020.108357
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发表时间：
2020-08
期刊：
影响因子：
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通讯作者：
A. Thompson;J. Belnoue;S. Hallett
中科院分区：
文献类型：
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作者：
A. Thompson;J. Belnoue;S. Hallett
随着对低成本、大批量生产复合材料的需求的增加，对建模能力的需求也在增加，以帮助通知和优化复合材料制造工艺。本文介绍了一种有限元方法来模拟平纹织物在双隔膜成形过程中的行为。使用一个相互约束的壳膜方法来捕捉纺织品的特性行为，该方法进行评估，在其能力来预测严重的变形内存在的实验试验。该模型验证了不同的纤维取向和同时形成的多层的实验结果。该方法准确地预测了实验中观察到的严重皱纹，并用于帮助进一步了解双隔膜成形过程中缺陷形成的催化剂。
As the requirement for low cost, high volume production of composites increases, so does the requirement for modelling capability to help inform and optimise the composite manufacturing processes. In this paper a finite element approach is introduced to simulate the behaviour of a plain weave fabric during the double diaphragm forming process. Using a mutually constrained shell-membrane method to capture the characteristic behaviours of the textile, the approach is assessed in its ability to predict the severe deformations present within experimental trials. The model is validated against experimental results for different fibre orientations and for the simultaneous forming of multiple layers. The approach accurately predicts the severe wrinkles observed in the experiments and is used to help further understand the catalysts for defect formation in the double diaphragm forming process.