Stress-strain behaviour of graphene reinforced aluminum nanocomposite under compressive loading using molecular dynamics

AK Srivastava and VK Pathak and R Singh and MK Dikshit, MATERIALS TODAY- PROCEEDINGS, 44, 4521-4525 (2021).

DOI: 10.1016/j.matpr.2020.10.803

In the present study, the graphene sheet (GS) - embedded aluminium (Al) composite under compressive strain rate is analyzed using molecular dynamics (MD) simulation. The effects of pin-hole and layering of GSs on compressive strengthening behaviour of the composite material are predicted. MD simulation has been performed with the aid of open-source code LAMMPS by modelling a periodic system of GS-Al nanocomposite unit cells. Adaptive Intermolecular Reactive Empirical Bond Order (AIREBO) and Embedded atom method (EAM) potentials are employed to model the interactions between carbon atoms and the atoms of Al respectively. The simulation results show that the compressive strength of nanocomposite material is substantially larger than that of pure Al material. It is also found that the compressive elastic modulus of GS-Al nanocomposite material deteriorates because of pin-holed GS on the contrary to layered GS reinforced nanocomposites. (c) 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on Advances in Materials Processing & Manufacturing Applications.

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