Noncoaxial vibration and buckling analysis of embedded double-walled carbon nanotubes by using doublet mechanics

被引：47
作者：
Gul, Ufuk [1 ]
Aydogdu, Metin [1 ]
机构：
[1] Trakya Univ, Dept Mech Engn, TR-22030 Edirne, Turkey
来源：
COMPOSITES PART B-ENGINEERING | 2018年 / 137卷
关键词：
Doublewalled carbon nanotubes; Buckling; Doublet mechanics; Vibration; MOLECULAR-DYNAMICS; WAVE PROPAGATION; ELASTIC MEDIUM; SHELL-MODEL; BEAM MODEL; NANOBEAMS; FORMULATION; TORSION; MEDIA;
D O I：
10.1016/j.compositesb.2017.11.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Free vibration and buckling of double-walled carbon nanotubes embedded in an elastic medium with simply supported boundary conditions are studied. Doublet Mechanics (DM) is used in the analysis. Macro level strains and stresses are defined in terms of micro level strains and stresses in the DM theory. These micro deformations and micro stresses are expanded in Taylor series and the number of terms in the Taylor series defines degree of the approach. Double-walled carbon nanotubes are modelled as Euler-Bernoulli beams embedded in an elastic medium. Critical buckling loads and free vibration frequencies are obtained by using DM and compared with the classical elasticity solutions. It is obtained that for some frequencies carbon nanotubes move noncoaxially. Noncoaxial vibration and buckling affect the physical properties of carbon nanotubes. The present results show that a length scale dependent DM can be used in the design of nano electro-mechanical systems.
引用
收藏
页码：60 / 73
页数：14
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