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Abstract

In order to accurately predict the performance of 3D woven composites, it is necessary that realistic textile geometry is considered, since failure typically initiates at regions of high deformation or resin pockets. This paper presents the development of a finite element model based on the multi-chain digital element technique, as applied to simulate weaving and compaction of an orthogonal 3D woven composite. The model was reduced to the scale of the unit cell facilitating high fidelity results combined with relatively fast analysis times. The results of these simulations are compared with micro computed tomography (Cr) scans of a dry specimen of fabric subjected to in situ compaction. The model accurately depicted all of the key features of the fabric including yarn waviness and cross-sectional shapes as well as their development with compaction. A parametric study is presented to characterise the effect of the model inputs on the analysis speed and accuracy. (C) 2013 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)747-756
Number of pages10
JournalComposite Structures
Volume108
Early online date12 Oct 2013
DOIs
Publication statusPublished - Feb 2014

Structured keywords

  • Composites UTC

Keywords

  • 3D weave
  • Textile composites
  • Finite element analysis (FEA)
  • Preform
  • TEXTILE COMPOSITES
  • FAILURE
  • PERIODICITY
  • COMPACTION
  • SIMULATION
  • MECHANICS
  • BEHAVIOR
  • GEOMETRY
  • FABRICS
  • SCALE

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