Article (Scientific journals)
A study of composite laminates failure using an anisotropic gradient-enhanced damage mean-field homogenization model
Wu, Ling; Sket, Federico; Molina-Aldareguia, Jon M et al.
2015In Composite Structures, 126, p. 246-264
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NOTICE: this is the author’s version of a work that was accepted for publication in Composite Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Composite Structures 126, 2015 DOI: 10.1016/j.compstruct.2015.02.070


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Keywords :
Damage; Composite laminates; Mean-Field Homogenization; Multi-scale; Delamination; LIMARC
Abstract :
[en] The failure of carbon fiber reinforced epoxy laminates is studied using an anisotropic gradient-enhanced continuum damage model embedded in a mean-field homogenization scheme. In each ply, a homogenized material law is used to capture the intra-laminar failure. The anisotropy of the homogenized material model results from the homogenization method and from the reformulation of the non-local continuum damage theory to account for the material anisotropy. As a result the damage propagation direction in each ply is predicted with accuracy as compared to the experimental results, while the problems of losing uniqueness and strain localization, which occur in classical finite element simulations when strain softening of materials is involved, can be avoided. To model the delamination process, the hybrid discontinuous Galerkin/extrinsic cohesive law method is introduced at the ply interfaces. This hybrid method avoids the need to propagate topological changes in the mesh with the propagation of the delamination while it preserves the consistency and stability in the un-cracked interfaces. As a demonstration, open-hole coupons with different stacking sequences are studied numerically and experimentally. Both the intra- and inter-laminar failure patterns are shown to be well captured by the computational framework.
Research center :
Computational & Multiscale Mechanics of Materials
Disciplines :
Mechanical engineering
Aerospace & aeronautics engineering
Materials science & engineering
Author, co-author :
Wu, Ling ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Sket, Federico;  IMDEA Materials
Molina-Aldareguia, Jon M;  IMDEA Materials
Makradi, Ahmed;  CRP Henri Tudor
Adam, Laurent;  e-Xstream Engineering
Doghri, Issam;  Université Catholique de Louvain - UCL
Noels, Ludovic  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Language :
English
Title :
A study of composite laminates failure using an anisotropic gradient-enhanced damage mean-field homogenization model
Publication date :
August 2015
Journal title :
Composite Structures
ISSN :
0263-8223
eISSN :
1879-1085
Publisher :
Elsevier Science
Volume :
126
Pages :
246-264
Peer reviewed :
Peer Reviewed verified by ORBi
Tags :
CÉCI : Consortium des Équipements de Calcul Intensif
European Projects :
FP7 - 235303 - MATERA+ - ERA-NET Plus on Materials Research
Name of the research project :
SIMUCOMP and ERA-NET MATERA+ project financed by the Fonds National de la Recherche (FNR) of Luxembourg, the Consejerıa de Educacion y Empleo of the Comunidad de Madrid, the Walloon region (agreement no 1017232, CT-EUC2010-10-12), and by the European Union’s Seventh Framework Programme (FP7/2007-2013).
Funders :
Service public de Wallonie : Direction générale opérationnelle de l'économie, de l'emploi et de la recherche - DG06
Consejeria de Educacion y Empleo of Comunidad de Madrid
FNR - Fonds National de la Recherche [LU]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
CÉCI - Consortium des Équipements de Calcul Intensif [BE]
CE - Commission Européenne [BE]
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since 22 February 2015

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