Interaction modelling of the thermomechanical behaviour of spatially-oriented graphene platelets (GPLs) reinforced polymer matrix

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:232

Article

Elmasry, Ahmed¹  Azoti, Wiyao^2,3  Elmarakbi, Mohab¹  Elmarakbi, Ahmed¹ 

[1] Northumbria Univ, Fac Engn & Environm, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

[2] Univ Strasbourg, CNRS UMR 7357, ICUBE Lab, 4 Rue Boussingault, F-67000 Strasbourg, France

[3] ECAM Strasbourg Europe, Sch Engn, 2 Rue Madrid, F-67300 Schiltigheim, France

关键词: Graphene platelets;    Polymer matrix composites;    Multi-site modelling;    Thermoelastic properties;    Micromechanics;    RVE;    FE modelling;   

DOI  :  10.1016/j.ijsolstr.2021.111183

来源: Elsevier

【 摘 要 】

Graphene has a diversity of properties, making it an attractive candidate as a reinforcement material. To fully exploit these properties; robust mathematical models should be designed and developed. However, considering interactions between embedded GPLs is a challenging task. These interactions have an important contribution to the behaviour of nanocomposite material, and most of the available numerical and analytical literature ignore them. The current work discloses an integrated and computationally inex-pensive approach to help discover new realistic graphene platelets (GPLs) nanocomposite model using analytical Multi-site (MS) scheme. The superiority of MS modelling is achieved by the consideration of the effect of the interaction between GPLs inclusions and their neighbourhood. Analytical One-site (OS) scheme is also utilised to derive the macroscopic response of the composite with random microstructures. The modelling techniques employed to derive the overall response of the composite are based on a thermomechanical kinematics integral equation. In addition to the analytical investiga-tion, numerical characterisation using finite element modelling (FEM) is also performed on a representa-tive volume element (RVE) to confront the analytical micromechanics formulation. GPLs are selected for modelling the graphene for which different orientation are considered within a Polyamide-Nylon 6 (GPL/ PA6) matrix. Our study provides a promising framework approach for a coherent design of this category of materials. (c) 2021 Elsevier Ltd. All rights reserved.

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