|Reference : Non-local damage-enhanced MFH for multiscale simulations of composites|
|Scientific congresses and symposiums : Paper published in a book|
|Engineering, computing & technology : Aerospace & aeronautics engineering|
Engineering, computing & technology : Materials science & engineering
|Non-local damage-enhanced MFH for multiscale simulations of composites|
|Wu, Ling [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures >]|
|Noels, Ludovic [Université de Liège - ULg > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3) >]|
|Adam, Laurent [e-Xstream > > > >]|
|Doghri, Issam [Université Catholique de Louvain - UCL > iMMC > > >]|
|Proceedings of the XII SEM International Conference & Exposition on Experimental and Applied Mechanics|
|XII SEM International Conference & Exposition on Experimental and Applied Mechanics|
|11-14 June 2012|
|Society for Experimental Mechanics Inc.|
|[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 computational 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)|
|Researchers ; Professionals|
|©2012 Society for Experimental Mechanics Inc.|
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