Reference : Non-local Damage-Enhanced MFH for Multiscale Simulations of Composites
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Engineering, computing & technology : Mechanical engineering
Non-local Damage-Enhanced MFH for Multiscale Simulations of Composites
Wu, Ling mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures >]
Noels, Ludovic mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3) >]
Adam, Laurent [e-Xstream SA > > > >]
Doghri, Issam [Université Catholique de Louvain - UCL > > > >]
Composite Materials and Joining Technologies for Composites, Volume 7
Patterson, Eann
Backman, David
Cloud, Gary
Conference Proceedings of the Society for Experimental Mechanics Series, Vol. 44
pages 115-121
[en] Mean-Field Homogenization ; non-local ; composites ; damage ; anisotropy
[en] In this work, a gradient-enhanced mean-field homogenization (MFH) procedure is proposed for fiber reinforced materials. In this approach, the fibers are assumed to remain linear elastic while the matrix material obeys an elasto-plastic behavior enhanced by a damage model. As classical finite element simulations face the problems of losing uniqueness and strain localization when strain softening of materials is involved, we develop the mean-field homogenization in a non-local way. Toward this end we use the so-called non-local implicit approach, reformulated in an anisotropic way to describe the damage in the matrix. As a result we have a multi-scale model that can be used to study the damage process at the meso-scale, and in particular the damaging of plies in a composite stack, in an efficient comput0ational way. As a demonstration a
stack with a hole is studied and it is shown that the model predicts the damaging process in bands oriented with the fiber directions.
The research has been funded by the Walloon Region under the agreement SIMUCOMP no 1017232 (CT-EUC 2010-10-12) in the context of the ERA-NET +, Matera + framework.
SIMUCOMP no 1017232 (CT-EUC 2010-10-12)
FP7 ; 235303 - MATERA+ - ERA-NET Plus on Materials Research

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