Nonlinear structural mechanics based modeling of carbon nanotube deformation

被引：146

作者：

Pantano, A ^{[1
]}

Boyce, MC ^{[1
]}

Parks, DM ^{[1
]}

机构：

[1] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.91.145504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A nonlinear structural mechanics based approach for modeling the structure and the deformation of single-wall and multiwall carbon nanotubes (CNTs) is presented. Individual tubes are modeled using shell finite elements, where a specific pairing of elastic properties and mechanical thickness of the tube wall is identified to enable successful modeling with shell theory. The effects of van der Waals forces are simulated with special interaction elements. This new CNT modeling approach is verified by comparison with molecular dynamics simulations and high-resolution micrographs available in the literature. The mechanics of wrinkling of multiwall CNTs are studied, demonstrating the role of the multiwalled shell structure and interwall van der Waals interactions in governing buckling and postbuckling behavior.

引用

页数：4

共 28 条

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[2]

Belytschko T., 2014, Nonlinear Finite Elements for Continua and Structures

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