Evaluation of the in-plane effective elastic moduli of single-layered graphene sheet
Source abstract
Abstract
In this paper, an equivalent continuum- structural mechanics approach is used to characterize the mechanical behaviour of nanostructured graphene. The in-plane elastic deformation of armchair graphene sheets is simulated by using finite element modelling. The model is based on the assumption that force interaction among carbon atoms can be modelled by load-carrying beams in a representative two-dimen- sional honeycomb lattice structure. The elastic prop- erties of beam elements are determined by equating the energies of the molecular structure and the continuum beam model subjected to small strain deformation. Then an equivalent continuum technique is adopted to estimate effective elastic moduli from which elastic constants are extracted. A comparison of elastic constants obtained from current modelling concur with results reported in literature. With the multifunctional properties of graphene sheets as manifested in a broad range of industrial applications, determination of their elastic moduli will facilitate a better design of the corresponding materials at mac- roscopic level.
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Research context
OpenAlex topics: Graphene research and applications · Carbon Nanotubes in Composites · Boron and Carbon Nanomaterials Research
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