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Modeling of the effect of particles size, particles distribution and particles number on mechanical properties of polymer-clay nano-composites: Numerical homogenization versus experimental results

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2016
auteur(s) Djebara Y.; El Moumen Ahmed; Kanit Toufik; Madani S.; Imad Abdellatif
journal (abréviation) Composites Part B: Engineering (Compos B Eng)
volume (numéro) 86
pages 135 – 142
résumé The main goal of this paper is to predict the elastic modulus of partially intercalated and exfoliated polymer-clay nano-composites using numerical homogenization techniques based on the finite element method. The representative volume element was employed here to capture nano-composites microstructure, where both intercalated exfoliated and clay platelets coexisted together. The effective macroscopic properties of the studied microstructure are obtained with two boundary conditions: periodic boundary conditions and kinematic uniform boundary conditions. The effect of particle volume fractions, aspect ratio, number and distribution of particles and the type of boundary conditions are numerically studied for different configurations. This paper investigate also the performance of several classical analytical models as Mori and Tanaka model, Halpin and Tsai model, generalized self consistent model through their ability to estimate the mechanical properties of nano-composites. A comparison between simulation results of polypropylene clay nano-composites, analytical methods and experimental data has confirmed the validity of the set results.
mots clés A. Polymer-matrix composites; A. Particle-reinforcement; B. Microstructures; C. Computational modelling; Nano-composites
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