Abstract
Interlock fabric preform enables to manufacture, by R.T.M. process, thick composite parts that are resistant to delamination and cracking. Numerical analysis of interlock composite preforming allows to determine conditions for feasibility of the process and above all to know the position of fibres in the final composite part. For this forming simulation, specific hexahedral finite elements made of segment yarns are proposed. Position of each yarn segment within the element is taken into account. This avoids determination of a homogenised equivalent continuous law that would be very difficult considering the complexity of the weaving. Transverse properties of fabric are taken into account within a hypoelastic constitutive law. A set of 3D interlock fabric forming simulations shows the efficiency of the proposed approach.
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De Luycker, E., Morestin, F., Boisse, P. et al. Numerical Analysis of 3D Interlock Composite Preforming. Int J Mater Form 1 (Suppl 1), 843–846 (2008). https://doi.org/10.1007/s12289-008-0267-x
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DOI: https://doi.org/10.1007/s12289-008-0267-x