ORBi: Wu Ling - Non-local damage-enhanced MFH for multiscale simulations of composites

Reference : Non-local damage-enhanced MFH for multiscale simulations of composites


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering Engineering, computing & technology : Aerospace & aeronautics engineering
	To cite this reference:	http://hdl.handle.net/2268/116945

Title :	Non-local damage-enhanced MFH for multiscale simulations of composites
Language :	English
Author, co-author :	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 > > >]
Publication date :	2012
Main document title :	Proceedings of the XII SEM International Conference & Exposition on Experimental and Applied Mechanics
Pages :	8 pages
On invitation :	No
Audience :	International
Event name :	XII SEM International Conference & Exposition on Experimental and Applied Mechanics
Event date :	11-14 June 2012
Event organizer :	Society for Experimental Mechanics Inc.
Event place (city) :	Costa Mesa
Event country :	USA
Abstract :	[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.
Funders :	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.
Name of the research project :	SIMUCOMP no 1017232 (CT-EUC 2010-10-12)
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/116945
Mentions required by the publisher for OA :	©2012 Society for Experimental Mechanics Inc.

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