Computational micro to macro transitions for shape memory alloy composites using periodic homogenization
Article dans une revue avec comité de lecture
Date
2015Journal
Smart Materials and StructuresRésumé
In the current manuscript, a homogenization framework is proposed for periodic composites with shape memory alloy (SMA) constituents under quasi-static thermomechanical conditions. The methodology is based on the step-by-step periodic homogenization, in which the macroscopic and the microscopic problems of the composite are solved simultaneously. The implementation of the framework is examined with numerical examples on SMA composite laminates. Complexity of the composite nonlinear response and non-proportional stress state in the SMA appears, even in the case of uniaxial macroscopic boundary conditions. Moreover, under certain conditions, the composite laminate can exhibit a non-convex transformation surface. Additionally, the transformation temperatures at various stress levels under isobaric thermal cycling can be quite different between the composite and the pure SMA.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Documents liés
Visualiser des documents liés par titre, auteur, créateur et sujet.
-
Conférence invitéeTIKARROUCHINE, El-Hadi; CHATZIGEORGIOU, George; PIOTROWSKI, Boris; CHEMISKY, Yves; PRAUD, Francis; 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 ...
-
Communication avec acteThe present work proposes a 3D model, based on the thermodynamical coupling of different strain mechanisms such as the forward and reverse phase transformation, the martensitic reorientation, the transformation-introduced ...
-
Conférence invitéePATOOR, Etienne; MOHARA, Guillaume; CHATZIATHANASIOU, Dimitris; CHEMISKY, Yves; CHATZIGEORGIOU, George; MERAGHNI, Fodil (2016)A transformation criterion that includes the effect of tension-compression asymmetry and texture-induced anisotropy is used to describe the size of the transformation region surrounding the tip of an edge crack in a shape ...
-
Conférence invitéeIn this work, a new 3D thermomechanically coupled phenomenological model is proposed for SMAs. SMA behavior is described through several strain mechanisms, each associated with its proper internal variables. Forward and ...
-
Article dans une revue avec comité de lectureACHOUR, Nadia; CHATZIGEORGIOU, George; CHEMISKY, Yves; FITOUSSI, Joseph; MERAGHNI, Fodil (Elsevier, 2015)In this work, the phenomenological viscoplastic DSGZ model (Duan et al., 2001 [13]), developed for glassy or semi-crystalline polymers, is numerically implemented in a three-dimensional framework, following an implicit ...