1. Hybrid micromechanical-phenomenological modelling of anisotropic damage and anelasticity induced by micro-cracks in unidirectional composites
- Author
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Georges Chatzigeorgiou, Francis Praud, Yves Chemisky, Fodil Meraghni, Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Institut de Recherche Technologique Jules Verne [Bouguenais] (IRT Jules Verne), IRT Jules Vernes, This paper is part of the COPERSIM project managed by IRT Jules Verne (French Institute in Research and Technology in Advanced Manufacturing Technologies for Composite, Metallic and Hybrid Structures). The authors wish to associate the industrial and academic partners of this project, and respectively Arts et Metiers ParisTech, Solvay, Plastic Omnium, PSA and Renault.
- Subjects
Matériaux [Sciences de l'ingénieur] ,Materials science ,Implicit implementation ,Constitutive equation ,02 engineering and technology ,Non-linear behaviour ,0203 mechanical engineering ,Anisotropic damage ,[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] ,Mécanique: Mécanique des matériaux [Sciences de l'ingénieur] ,Composite material ,Return mapping ,Anisotropy ,Civil and Structural Engineering ,Mécanique [Sciences de l'ingénieur] ,business.industry ,Operator (physics) ,Mécanique: Mécanique des solides [Sciences de l'ingénieur] ,Micro cracks ,Mécanique: Matériaux et structures en mécanique [Sciences de l'ingénieur] ,Micromechanics ,Tangent ,Structural engineering ,Unidirectional composites ,021001 nanoscience & nanotechnology ,020303 mechanical engineering & transports ,Ceramics and Composites ,Representative elementary volume ,0210 nano-technology ,business - Abstract
In this paper, a new modelling approach is presented to describe the damaged mechanical response of unidirectional composites under the small strain assumption. The proposed constitutive equations inherits from the phenomenological theories of Continuum Damage Mechanics (CDM) but brings out a micromechanical description of the damaged Representative Volume Element (RVE) while being formulated in a proper thermodynamical framework. The model is provided with an implicit numerical scheme based on the so-called ”return mapping algorithm” as well as the formulation of the tangent operator. The identification and the prediction capabilities of the model are validated using experimental data including off-axis tensile tests. Finally, to provide a better understanding of the model, a multi-axial non-proportional simulation is performed and analysed. This paper is part of the COPERSIM project managed by IRT Jules Verne (French Institute in Research and Technology in Advanced Manufacturing Technologies for Composite, Metallic and Hybrid Structures). The authors wish to associate the industrial and academic partners of this project; respectively Arts et Metiers ParisTech, Solvay, Plastic Omnium, PSA and Renault.
- Published
- 2017