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Predicting the non-linear mechanical response of triaxial braided composites

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Title: Predicting the non-linear mechanical response of triaxial braided composites
Authors: Wehrkamp-Richter, T
Vieira De Carvalho, N
Pinho, ST
Item Type: Journal Article
Abstract: In this paper, the non-linear mechanical response of triaxial braided composites under multiple loading conditions was investigated with a meso-scale simulation strategy. Numerical predictions made by three-dimensional finite element unit cells with a realistic internal geometry in two nesting configurations correlated well with experimental stress–strain curves and damage mechanisms. Although the investigated braid topologies exhibited considerable geometric variability, the unit cell modelling approach with a compacted geometry model built from average input parameters was capable of correctly predicting the homogenised constitutive response, localisation, and damage evolution. Further, the mechanical response was predicted under variable uni-axial off-axis load cases and the effect of the textile topology on the ultimate strength of the material was investigated. Aside from providing a valuable insight into how damage propagation is affected by the meso-structure, the predicted stress–strain curves can be used to calibrate macroscopic material models suitable for large-scale crash simulations of textile composites.
Issue Date: 1-Nov-2018
Date of Acceptance: 10-Aug-2018
URI: http://hdl.handle.net/10044/1/66643
DOI: https://dx.doi.org/10.1016/j.compositesa.2018.08.011
ISSN: 1359-835X
Publisher: Elsevier
Start Page: 117
End Page: 135
Journal / Book Title: Composites Part A: Applied Science and Manufacturing
Volume: 114
Copyright Statement: © 2018 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/M002500/1
Keywords: Science & Technology
Technology
Engineering, Manufacturing
Materials Science, Composites
Engineering
Materials Science
Fabrics/textiles
Damage mechanics
Braiding
Unit cell
FIBER-REINFORCED COMPOSITES
MULTIAXIAL STRESS STATES
TEXTILE COMPOSITES
WOVEN COMPOSITES
FAILURE ANALYSIS
MODELS
DAMAGE
BEHAVIOR
IMPLEMENTATION
GEOMETRY
0912 Materials Engineering
0913 Mechanical Engineering
0901 Aerospace Engineering
Materials
Publication Status: Published
Online Publication Date: 2018-08-12
Appears in Collections:Faculty of Engineering
Aeronautics



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