1. Fully integrated multi-scale modelling of damage and time-dependency in thermoplastic-based woven composites
- Author
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Fodil Meraghni, George Chatzigeorgiou, Francis Praud, Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), and 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 Institute of Technology, Solvay, Plastic Omnium, PSA and Renault.
- Subjects
Materials science ,Thermoplastic ,Computational Mechanics ,02 engineering and technology ,[SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] ,Homogenization (chemistry) ,0203 mechanical engineering ,[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] ,General Materials Science ,Time dependency ,Composite material ,Mécanique: Mécanique des matériaux [Sciences de l'ingénieur] ,multi-scale modelling ,periodic homogenization ,chemistry.chemical_classification ,Mechanical Engineering ,Mécanique: Mécanique des solides [Sciences de l'ingénieur] ,time-dependent behaviour ,021001 nanoscience & nanotechnology ,Woven composites ,020303 mechanical engineering & transports ,chemistry ,Mechanics of Materials ,thermoplastic matrices ,0210 nano-technology ,damage - Abstract
In this work, a multi-scale model established from the concept of periodic homogenization is utilized to predict the cyclic and time-dependent response of thermoplastic-based woven composites. The macroscopic behaviour of the composite is determined from finite element simulations of the representative unit cell of the periodic microstructure, where the local non-linear constitutive laws of the components are directly integrated, namely, the matrix and the yarns. The thermoplastic matrix is described by a phenomenological multi-mechanisms constitutive model accounting for viscoelasticity, viscoplasticity and ductile damage. For the yarns, a hybrid micromechanical–phenomenological constitutive model accounting for anisotropic damage and anelasticity induced by the presence of a diffuse micro-crack network is utilized. The capabilities of the overall multi-scale model are validated by comparing the numerical predictions with experimental data. Further illustrative examples are also provided, where the composite undergoes time-dependent deformations under uni-axial and non-proportional multi-axial loading paths. The multi-scale model is also employed to analyze the influence of the local deformation processes on the macroscopic response of the composite. 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 Institute of Technology, Solvay, Plastic Omnium, PSA and Renault.
- Published
- 2020
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