| Analytical technique for computing lattice properties of a series epoxy nanocomposite |
| Paper ID : 1601-UFGNSM-FULL |
| Authors: |
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mohamad javad ghasemi parizi *1, hossein shahverdi2, mahdi mondali3 1ghazayei atigh street, valiasr square, tehran, iran
postal code : 1415845813 2Assoc. Prof., Department of aerospace eng., Amirkabir Univ., Tehran, Iran. 3Assoc. Prof., Department of mech. and aerospace eng., Sci. and Research branch, Islamic Azad Univ., Tehran, Iran |
| Abstract: |
| Series epoxy nanocomposite elements with different condition and loading levels are fabricated via the analytical technique. Mechanical properties contain elastic and stiffness constants of the epoxy nanocomposites reinforced by defective graphene sheets are investigated. The computed lattice properties are in good agreement with the available literatures. to this goal, first of all the mechanical properties of graphene sheets are extracted using Finite Element (FE) method. After that, some well-known defects are applied to the computational model to provide an evaluation of the model via available experimental results. In this regard, by incorporating Full Continuum (FC) and semi-continuum (SE) models into FEM construction process, the mechanical properties of nanocomposites are determined. It must be noted that the SE model is utilized to consider the effect of hexagonal-lattice graphene sheet (GS) and vdW forces between carbon and resin’s atoms. In this model, multi-scale method is used for simulating the bonds between carbon atoms and epoxy resin. So the influences of the interphase layer and existent defects of graphene sheets on Nano composite properties are investigated via SE model. By using the mentioned computational models, the elastic and stiffness properties are determined in different weight of fractions (W%) and length of graphene sheets. This study shows that an excellent agreement between the FE method and the available experimental observations. Such properties may serve as a guide for future nano device applications for computing. |
| Keywords: |
| Nanocomposite; Graphene; Finite Element; Semi-Continuum model; Defect. |
| Status : Paper Accepted (Poster Presentation) |
