ABSTRACT

This work presents a computational model for a discontinuous fibre composite manufacturing process. The alignment mechanism of this novel process, called the High Performance Discontinuous Fibre (HiPerDiF) method, involves highly coupled fluid–structure interactions. Fibres with a length on the order of a few millimetres are placed in a water suspension, sprayed between two parallel plates and deposited on a moving belt to make an aligned discontinuous fibre tape. This technology can be used as part of a composites recycling process to remanufacture reclaimed fibres into valuable recycled composite feedstock by ensuring a high level of alignment. This work aims to model the alignment mechanism using smoothed particle hydrodynamics in order to inform the design of the industrial machine. The results reveal the influence of jet angle and fibre length on the overall quality of fibre alignment.

摘要

这项工作提出了一种不连续纤维复合材料制造过程的计算模型。这种称为高性能不连续纤维 (HiPerDiF) 方法的新工艺的对齐机制涉及高度耦合的流固耦合。将长度为几毫米的纤维置于水悬浮液中，喷洒在两个平行板之间并沉积在移动带上以制成对齐的不连续纤维带。该技术可用作复合材料回收过程的一部分，通过确保高度对齐，将回收纤维再制造成有价值的回收复合原料。这项工作旨在使用平滑粒子流体动力学对对齐机制进行建模，以便为工业机器的设计提供信息。