Elastic and inelastic local strain fields in composites with coated fibers or particles: theory and validation
TypeArticles dans des revues avec comité de lecture
This paper deals with mean field multiscale approaches for coated fiber- or particle-reinforced composites under nonlinear strain. The current work attempts to extend Dvorak’s well-known transformation field analysis for mean field approaches, in which the composite’s constitutive law is split into an elastic and an inelastic part. The classical Eshelby’s inhomogeneity problem considering eigenstrains is revisited in order to address the presence of a coating layer. For this scope, three different methodologies are employed, one for general ellipsoidal inhomogeneities, a modified composite cylinder method for long cylindrical fibers and a modified composite sphere method for spherical particles. After identifying proper interaction tensors for the inhomogeneity and its coating layer, the composite’s overall response is evaluated by extending classical mean field techniques, such as the Mori–Tanaka and the self-consistent methods. Numerical examples illustrate the differences in macroscopic and microscopic predictions between the general approach and the modified composite cylinder and sphere Assemblages.
Files in this item
Showing items related by title, author, creator and subject.
CHATZIATHANASIOU, Dimitris; CHEMISKY, Yves; MERAGHNI, Fodil; CHATZIGEORGIOU, George; PATOOR, Etienne (Springer, 2015)In the present study, a new transformation criterion that includes the effect of tension–compression asymmetry and texture-induced anisotropy is proposed and combined with a thermodynamical model to describe the thermomechanical ...
CHATZIGEORGIOU, George; HOSSAIN, Mokarram; MERAGHNI, Fodil; STEINMANN, Paul (2015)This work proposes a coupled magneto-mechanical multi-scale model for simulating the curing process of magneto-sensitive polymers. In this type of composites, ferromagnetic particles are mixed with a liquid polymeric matrix ...
Periodic homogenization for fully coupled thermomechanical modeling of dissipative generalized standard materials CHATZIGEORGIOU, George; CHARALAMBAKIS, Nicolas; CHEMISKY, Yves; MERAGHNI, Fodil (Elsevier, 2016)The current work deals with periodic thermomechanical composite media, in which the material constituents are considered to obey the generalized standard materials laws. The aim is to provide a proper homogenization framework ...
ANAGNOSTOU, Dimitrios; CHATZIGEORGIOU, George; BOUVARD, Jean-Luc; CHEMISKY, Yves; MERAGHNI, Fodil; BILLON, Noelle (2016)The so-called VENU model is a visco-hyperelastic constitutive model, designed for amorphous rubbery polymers, which is based on an original approach initially developed by N. Billon (J. Appl. Polym. Sci. 125:4390-4401, ...
Modéliation multi-échelle non-linéaire par homogénéisation périodique et analyses par EF2 : application aux composites à matrice elastoviscoplastique endommageable TIKARROUCHINE, El-Hadi; PRAUD, Francis; CHATZIGEORGIOU, George; PIOTROWSKI, Boris; CHEMISKY, Yves; MERAGHNI, Fodil (2017)Dans ce papier, une technique de modélisation multi-échelle (EF2) basée sur le principe d’homogénéisation périodique a été développée pour décrire le comportement des structures composites 3D avec un comportement ...