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论文类型：期刊论文

发表时间：2012-01-01

发表刊物：COMPOSITES PART B-ENGINEERING

收录刊物：SCIE、EI

卷号：43

期号：1,SI

页面范围：27-32

ISSN号：1359-8368

关键字：Nano-structures; Elasticity; Analytical modeling

摘要：First gradient elasticity theory considering surface energy is employed to investigate the axisymmetric deformation of circular nanotubes, in which the microstructural and surface effects are taken into account. The governing equilibrium equation is derived and the corresponding analytical solutions are obtained. It is demonstrated that the total stress decreases with the increase of the intrinsic bulk size, while it increases with the increase of the directional surface energy length parameter. These parameters have strong influences on the mechanical behavior of the embedded nanotubes and thus should be considered in the practical analysis of nanostructures. (C) 2011 Elsevier Ltd. All rights reserved.