Phenomenological multi-mechanisms constitutive modelling for thermoplastic polymers, implicit implementation and experimental validation
Article dans une revue avec comité de lecture
Date
2017Journal
Mechanics of MaterialsAbstract
In this work, a phenomenological model for thermoplastic polymers involving several mechanisms is proposed. The constitutive equations lie within the framework of thermodynamics and account for both viscoelasticty, viscoplasticity and ductile damage. An implicit numerical scheme utilizing the “return mapping algorithm” is provided along with the formulation of the tangent operator. The parameters of the developed model are experimentally identified through a gradient-based inverse method using three strain-controlled configurations. The model validation is achieved by comparing numerical results with experimental data obtained on a cyclic loading configuration test. Finally, the capabilities of the proposed model are demonstrated with a series of numerical simulations where complex cyclic and non-proportional loading conditions are applied as well as with a structural FE application.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Communication avec actePRAUD, Francis; SCHNEIDER, Konrad; CHATZIGEORGIOU, George; MERAGHNI, Fodil (Association pour les MAtériaux Composites (AMAC), 2023-07)Afin d’apporter un maxinmun d’éléments de compréhension quant au comportement mécanique des composites thermoplastiques renforcés de fibres courtes, la présente contribution propose une démarche multi-échelle par champs ...
-
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 ...
-
Article dans une revue avec comité de lectureMOUELLE, L.; CHATZIGEORGIOU, George; SERRI, J.; FLEURY, E.; PRAUD, Francis; MERAGHNI, Fodil (Elsevier, 2019)In this paper, a new thermodynamically-consistent modeling approach, dedicated to welding applications, is presented to describe the phenomenon of hardening recovery in metals during annealing. The constitutive equations ...
-
Article dans une revue avec comité de lectureTIKARROUCHINE, El-Hadi; CHATZIGEORGIOU, George; PIOTROWSKI, Boris; CHEMISKY, Yves; PRAUD, Francis; MERAGHNI, Fodil (Elsevier, 2018)In this paper, a two scale Finite Element method (FE2 ), is presented to predict the non-linear macroscopic response of 3D composite structures with periodic microstructure that exhibit a time-dependent response. The ...
-
Conférence invitéeDans ce travail, un modèle micromécanique établi sur le principe de l’homogénéisation périodique est utilisé pour décrire le comportement macroscopique des composites à matrice thermoplastique sous chargements cycliques ...