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Textile Composite Damage Analysis Taking into Account the Forming Process

The internal structure of composite materials is modified during manufacturing. The formation of woven prepregs or dry preforms changes the angle between the warp and weft yarns. The damage behaviour of the consolidated composite is modified by these changes of angle. It is important when designing...

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Autores principales: Jauffret, Marjorie, Cocchi, Aldo, Naouar, Naim, Hochard, Christian, Boisse, Philippe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7728073/
https://www.ncbi.nlm.nih.gov/pubmed/33255691
http://dx.doi.org/10.3390/ma13235337
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author Jauffret, Marjorie
Cocchi, Aldo
Naouar, Naim
Hochard, Christian
Boisse, Philippe
author_facet Jauffret, Marjorie
Cocchi, Aldo
Naouar, Naim
Hochard, Christian
Boisse, Philippe
author_sort Jauffret, Marjorie
collection PubMed
description The internal structure of composite materials is modified during manufacturing. The formation of woven prepregs or dry preforms changes the angle between the warp and weft yarns. The damage behaviour of the consolidated composite is modified by these changes of angle. It is important when designing a composite part to consider this modification when calculating the damage in order to achieve a correct dimensioning. In this paper, a damage calculation approach of the consolidated textile composite that takes into account the change in orientation of the yarns due to forming is proposed. The angles after forming are determined by a simulation of the draping based on a hypoelastic behaviour of the woven fabric reinforcement. Two orthogonal frames based on the warp and weft directions of the textile reinforcement are used for the objective integration of stresses. Damage analysis of the cured woven composite with non-perpendicular warp and weft directions is achieved by replacing it with two equivalent Unidirectional (UD) plies representing the yarn directions. For each ply, a model based on Continuum Damage Mechanics (CDM) describes the progressive damage. Two examples are presented, a bias extension specimen and the hemispherical forming coupon. In both cases, the angles between the warp and weft yarns are changed. It is shown that the damage calculated by taking into account these angle changes is greatly modified.
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spelling pubmed-77280732020-12-11 Textile Composite Damage Analysis Taking into Account the Forming Process Jauffret, Marjorie Cocchi, Aldo Naouar, Naim Hochard, Christian Boisse, Philippe Materials (Basel) Article The internal structure of composite materials is modified during manufacturing. The formation of woven prepregs or dry preforms changes the angle between the warp and weft yarns. The damage behaviour of the consolidated composite is modified by these changes of angle. It is important when designing a composite part to consider this modification when calculating the damage in order to achieve a correct dimensioning. In this paper, a damage calculation approach of the consolidated textile composite that takes into account the change in orientation of the yarns due to forming is proposed. The angles after forming are determined by a simulation of the draping based on a hypoelastic behaviour of the woven fabric reinforcement. Two orthogonal frames based on the warp and weft directions of the textile reinforcement are used for the objective integration of stresses. Damage analysis of the cured woven composite with non-perpendicular warp and weft directions is achieved by replacing it with two equivalent Unidirectional (UD) plies representing the yarn directions. For each ply, a model based on Continuum Damage Mechanics (CDM) describes the progressive damage. Two examples are presented, a bias extension specimen and the hemispherical forming coupon. In both cases, the angles between the warp and weft yarns are changed. It is shown that the damage calculated by taking into account these angle changes is greatly modified. MDPI 2020-11-25 /pmc/articles/PMC7728073/ /pubmed/33255691 http://dx.doi.org/10.3390/ma13235337 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jauffret, Marjorie
Cocchi, Aldo
Naouar, Naim
Hochard, Christian
Boisse, Philippe
Textile Composite Damage Analysis Taking into Account the Forming Process
title Textile Composite Damage Analysis Taking into Account the Forming Process
title_full Textile Composite Damage Analysis Taking into Account the Forming Process
title_fullStr Textile Composite Damage Analysis Taking into Account the Forming Process
title_full_unstemmed Textile Composite Damage Analysis Taking into Account the Forming Process
title_short Textile Composite Damage Analysis Taking into Account the Forming Process
title_sort textile composite damage analysis taking into account the forming process
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7728073/
https://www.ncbi.nlm.nih.gov/pubmed/33255691
http://dx.doi.org/10.3390/ma13235337
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