Reference : A multiscale mean-field homogenization method for fiber-reinforced composites with gradi...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/116951
A multiscale mean-field homogenization method for fiber-reinforced composites with gradient-enhanced damage models
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, L [e-Xstream SA > > > >]
Doghri, Issam [Université Catholique de Louvain - UCL > iMMC > > >]
2012
Computer Methods in Applied Mechanics & Engineering
Elsevier Science
233-236
164–179
Yes
International
0045-7825
Lausanne
Switzerland
[en] Finite elements ; Gradient-enhanced ; Mean-Field Homogenization ; Fiber-reinforced materials ; Composite
[en] In this work, a gradient-enhanced homogenization procedure is proposed for fiber reinforced materials. In this approach, the fiber is assumed to remain linear elastic while the matrix material is modeled as elasto-plastic coupled with a damage law described by a non-local constitutive model. Toward this end, the mean-field homogenization is based on the knowledge of the macroscopic deformation tensors, internal variables and their gradients, which are applied
to a micro-structural representative volume element (RVE). The macro-stress is then obtained from a homogenization procedure. The methodology holds for 2-phase composites with moderate fiber volume ratios, and for which, at the RVE size, the matrix can be considered as homogeneous isotropic and the ellipsoidal fibers can be considered as homogeneous transversely isotropic. Under these assumptions, the method is successfully applied to simulate the damage process occurring in unidirectional carbon-fiber reinforced epoxy composites submitted to different loading conditions.
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 ; Students
http://hdl.handle.net/2268/116951
10.1016/j.cma.2012.04.011
http://dx.doi.org/10.1016/j.cma.2012.04.011
NOTICE: this is the author’s version of a work that was accepted for publication in Computer Methods in Applied Mechanics and Engineering. 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 Computer Methods in Applied Mechanics and Engineering, Vol. 233-236, pages 164 - 179, 2012, DOI: 10.1016/j.cma.2012.04.011

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