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Journal of Nanomaterials
Volume 2013 (2013), Article ID 416189, 6 pages
http://dx.doi.org/10.1155/2013/416189
Research Article

Thermally Induced Asymmetric Buckling of Circular Monolayer Graphene

Department of Mechanical Engineering, Kun Shan University, Tainan 71003, Taiwan

Received 25 June 2013; Revised 4 August 2013; Accepted 7 August 2013

Academic Editor: Sheng-Rui Jian

Copyright © 2013 Haw-Long Lee and Win-Jin Chang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The asymmetric buckling behaviors of circular monolayer graphene with clamped boundary condition subjected to temperature change are analytically studied based on the nonlocal elasticity theory, including the small length effect. The axisymmetrical and asymmetric critical buckling temperatures and mode shape of different order modes are obtained. According to the analysis, the asymmetric critical buckling temperature of monolayer graphene is larger than the axisymmetric one. The axisymmetrical and asymmetric critical buckling temperatures decrease with increasing nonlocal parameter. In addition, nodal diametrical lines and nodal circles can be found from the modal shapes. In order to avoid destruction of the sensors due to buckling of the structure, they can be placed at the nodal diametrical lines or nodal circles.