Geometric nonlinear analysis of large rotation behavior of a curved SWCNT

IF 4.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI:10.1080/19475411.2022.2061077

Prasad Dharap, Satish Nagarajaiah, Zhiling Li

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引用次数: 0

Abstract

ABSTRACT Nanotubes form clusters and are found in curved bundles in nanotube films and nanocomposites. Separation phenomenon is suspected to occur in these curved bundles. In this study, the deformation of a single-wall carbon nanotube (SWCNT) interacting with curved bundle nanotubes is analyzed. It is assumed that the bundle is rigid and only van der Waals force acts between the nanotube and the bundle of nanotubes. A new method of modeling geometric nonlinear behavior of the nanotube due to finite rotation and the corresponding van der Waals force is developed using co-rotational finite element method (CFEM) formulation, combined with small deformation beam theory, with the inclusion of axial force. Current developed CFEM method overcomes the limitation of linear Finite Element Method (FEM) formulation regarding large rotations and deformations of carbon nanotubes. This study provides a numerical tool to identify the critical curvature influence on the interaction of carbon nanotubes due to van der Waals forces and can provide more insight into studying irregularities in the electronic transport properties of adsorbed nanotubes in nanocomposites. Graphical abstract

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弯曲swcnts大旋转特性的几何非线性分析

纳米管形成团簇，在纳米管薄膜和纳米复合材料中以弯曲束的形式存在。怀疑这些弯曲束中存在分离现象。本研究分析了单壁碳纳米管与弯曲束纳米管相互作用时的变形。假设纳米管束是刚性的，并且在纳米管束和纳米管束之间仅发生范德华力作用。采用共转有限元法(CFEM)，结合小变形梁理论，结合轴向力，提出了一种模拟有限旋转作用下纳米管几何非线性行为及相应范德华力的新方法。目前发展起来的CFEM方法克服了线性有限元法在处理碳纳米管大旋转和大变形时的局限性。本研究提供了一个数值工具来确定范德华力对碳纳米管相互作用的临界曲率影响，并可以为研究纳米复合材料中吸附纳米管电子输运性质的不规则性提供更多的见解。图形抽象

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来源期刊

International Journal of Smart and Nano Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.30

自引率

5.10%

发文量

审稿时长

11 weeks

期刊介绍： The central aim of International Journal of Smart and Nano Materials is to publish original results, critical reviews, technical discussion, and book reviews related to this compelling research field: smart and nano materials, and their applications. The papers published in this journal will provide cutting edge information and instructive research guidance, encouraging more scientists to make their contribution to this dynamic research field.