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.

随着对低成本，复合材料大批量生产的要求增加，对建模能力的要求也随之提高，以帮助告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型过程中的行为。使用相互约束的壳膜方法捕获纺织品的特征行为，对该方法进行了预测实验试验中存在的严重变形的能力的评估。针对不同的纤维取向以及同时形成多层的实验结果验证了该模型。