The shear strain energy fluctuations caused by random porosities in graphene based on the stochastic finite element model

Author:

Chu LiuORCID,Shi JiajiaORCID,Souza de Cursi Eduardo

Abstract

Abstract Strain-induced deformation is a promising strategy to modify and functionalize the material properties of graphene. However, the impacts of random porosities are inevitable and complicated in the microstructure. In order to quantify and analyze the effects of random porosities in graphene under shear stress, the energy fluctuations and the equivalent elastic modulus are computed and recorded based on the stochastic finite element model. The finite element computation is combined with the Monte Carlo stochastic sampling procedure to distribute and propagate the random porosities in pristine graphene. Two different boundary conditions are taken into consideration and compared. Furthermore, the probability statistics of shear strain energy and equivalent elastic modulus are provided based on the comparison with the results of pristine graphene. The inhomogeneous spatial randomness is founded in the statistic records of shear strain energy. The sensitivity to the graphene chirality and boundary conditions are also shown for the porous graphene. The work in this paper provides important references for strain-induced engineering and artificial functionalization through topological vacancy control in graphene.

Funder

Large Instruments Open Foundation of Nantong University

Natural Science Foundation of the Higher Education Institutions of Jiangsu Province

Natural Science Foundation of Jiangsu Province

National Natural Science Foundation of China

Publisher

IOP Publishing

Subject

General Physics and Astronomy

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