Item


Internal geometric modelling of 3D woven composites: A comparison between different approaches

The mechanical behaviour of 3D woven composite materials is affected by deformations as resulting from the manufacturing process. The present study is based on comparison of three different methodologies to predict the internal yarn geometries of 3D through-thickness orthogonal interlock. The first approach idealises the geometry, which is obtained directly from manufacturing parameters assuming constant elliptical cross-sections. The second technique generates the yarn geometry from the Digital Element Method, which simulates the compaction process of the material. The last method considered is an analytical method defining longitudinal and transverse contours, which describe the undulation of fill, warp and binder yarns. The yarn geometries from the different methods are numerically analysed using voxel finite element analysis to determine the global volume fraction and the elastic properties. The results are also compared with experimental values to determine the strengths and weaknesses of each approach. The first approach is quicker than the others although the geometry is not the most accurate. The second and third method have a good match between the predicted geometry and optical micrograph of the fabric and the elastic properties are very similar for both methods

This work has been partially funded by the Spanish Government (Ministerio de Economia y Competitividad) and the European Union under contract DPI2012-34465

© Composite Structures, 2015, vol. 132, p. 1219-1230

Elsevier

Author: Isart Valle, Nativitat
El Said, B.
Ivanov, D.S.
Hallett, S.R.
Mayugo Majó, Joan Andreu
Blanco Villaverde, Norbert
Date: 2015 November 15
Abstract: The mechanical behaviour of 3D woven composite materials is affected by deformations as resulting from the manufacturing process. The present study is based on comparison of three different methodologies to predict the internal yarn geometries of 3D through-thickness orthogonal interlock. The first approach idealises the geometry, which is obtained directly from manufacturing parameters assuming constant elliptical cross-sections. The second technique generates the yarn geometry from the Digital Element Method, which simulates the compaction process of the material. The last method considered is an analytical method defining longitudinal and transverse contours, which describe the undulation of fill, warp and binder yarns. The yarn geometries from the different methods are numerically analysed using voxel finite element analysis to determine the global volume fraction and the elastic properties. The results are also compared with experimental values to determine the strengths and weaknesses of each approach. The first approach is quicker than the others although the geometry is not the most accurate. The second and third method have a good match between the predicted geometry and optical micrograph of the fabric and the elastic properties are very similar for both methods
This work has been partially funded by the Spanish Government (Ministerio de Economia y Competitividad) and the European Union under contract DPI2012-34465
Format: application/pdf
ISSN: 0263-8223 (versió paper)
1879-1085 (versió electrònica)
Document access: http://hdl.handle.net/10256/13732
Language: eng
Publisher: Elsevier
Collection: MINECO/PN 2013-2015/DPI2012-34465
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.compstruct.2015.07.007
Articles publicats (D-EMCI)
Is part of: © Composite Structures, 2015, vol. 132, p. 1219-1230
Rights: Tots els drets reservats
Subject: Compostos fibrosos
Fibrous composites
Materials compostos -- Propietats mecàniques
Composite materials -- Mechanical properties
Teixits i tèxtils -- Propietats mecàniques
Textile fabrics -- Mechanical properties
Elements finits, Mètode dels
Finite element method
Title: Internal geometric modelling of 3D woven composites: A comparison between different approaches
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

Subjects

Authors