Nonlinear bending and stretching of a circular graphene sheet under a central point load

被引：95

作者：

Duan, W. H. ^{[1
]}

Wang, C. M. ^{[2
,3
]}

机构：

[1] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia

[2] Natl Univ Singapore, Engn Sci Programme, Singapore 119260, Singapore

[3] Natl Univ Singapore, Dept Civil Engn, Singapore 119260, Singapore

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 07期

关键词：

NANOINDENTATION; MECHANISMS; FIELD;

D O I：

10.1088/0957-4484/20/7/075702

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Understanding of the bending and stretching properties of graphene is crucial in guiding its growth and applications. In this paper, we investigate the deformation of a single layer, circular, graphene sheet under a central point load by carrying out molecular mechanics (MM) simulations. The bending and stretching of the graphene sheet are characterized by using the von Karman plate theory. Stress concentrations near the loaded region and the boundary due to bending rigidity of the graphene sheet are highlighted. It is shown herein that, with properly selected parameters, the von Karman plate theory can provide a remarkably accurate prediction of the graphene sheet behavior under linear and nonlinear bending and stretching.

引用

页数：7

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