Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 77, Issue -, Pages 266-274Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2015.03.027
Keywords
Fabrics/textiles; Computational modelling; Resin flow
Funding
- Engineering and Physical Sciences Research Council, through the EPSRC Centre for Innovative Manufacturing in Composites [EP/IO33513/1]
- Engineering and Physical Sciences Research Council [EP/I033513/1] Funding Source: researchfish
- EPSRC [EP/I033513/1] Funding Source: UKRI
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A unit cell based Computational Fluid Dynamics model is presented for predicting permeability of multilayer fabric structures. In Liquid Composites Moulding processes, fabric lay-ups undergo significant manufacture-induced deformation, combining compression, shear, and inter-layer nesting. Starting from the configuration of un-deformed fabric, the deformation is simulated geometrically by accounting for self-imposed kinematic constraints of interweaving yarns. The geometrical modelling approach is implemented in the open-source software TexGen. The permeability tensor is retrieved from flow analysis in ANSYS/CFX, based on TexGen voxel models. Using only measured geometrical data for un-deformed fabrics, deformed plain weave fabric and twill weave fabric lay-ups were modelled and their permeability tensors predicted. Comparison with experimental data demonstrates the generally good accuracy of predictions derived from the proposed numerical method. (C) 2015 The Authors. Published by Elsevier Ltd.
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