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
http://hdl.handle.net/2268/116945
Non-local damage-enhanced MFH for multiscale simulations of composites
English
Wu, Ling mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures >]
Noels, Ludovic mailto [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 > > >]
2012
Proceedings of the XII SEM International Conference & Exposition on Experimental and Applied Mechanics
8 pages
No
No
International
XII SEM International Conference & Exposition on Experimental and Applied Mechanics
11-14 June 2012
Society for Experimental Mechanics Inc.
Costa Mesa
USA
[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
http://hdl.handle.net/2268/116945
©2012 Society for Experimental Mechanics Inc.

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