Modelling of Composite Fabric Processing

总体目标是提供模拟和设计工具，使工业界能够更有效地从纺织品预成型件设计和制造复合材料部件。该项目将集中在双隔膜成型的干无卷曲织物（NCF）。多层成形的建模将发展到包括模具与工具、模具与隔板和模具与层板的摩擦。将在Abaqus有限元（FE）软件中开发经验用户定义的摩擦定律，以表示这种行为。双膜片成形实验验证了模型的正确性。将开发基于机器学习的优化设计方法，以在形成大型复杂形状时快速预测褶皱和缺陷的位置。这将用于识别几何设计或工艺条件的变化，这些变化可以在所选演示器部件中提供可接受的缺陷水平。

The overall goal is to provide simulation and design tools which will enable industry to design and manufacture composite components from textile preforms more efficiently. The project will focus on double-diaphragm forming of dry non-crimp fabrics (NCFs). Modelling of multi-layer forming will be developed to include ply-to-tool, ply-to-diaphragm and ply-to-ply friction. An empirical user-defined friction law will be developed within Abaqus finite element (FE) software to represent this behaviour. Experiments using double-diaphragm forming will validate the model. An optimisation design methodology based on machine learning will be developed to provide rapid prediction of the location of wrinkles and defects when forming large and complex shapes. This will be used to identify changes in geometric design or process conditions, which can deliver acceptable level of defects across the chosen demonstrator parts.