BUCKLING ANALYSIS OF CARBON NANOTUBES USING A BEAM ELEMENT BASED ON MOLECULAR MECHANICS | ||||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||||
| Article 130, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Page 196-202 PDF (419.64 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/amme.2008.39792 | ||||
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| Authors | ||||
| HU N.1; NONUYA K.2; FUKUNAGA H.3 | ||||
| 1Associate professor, Dpt. of Aerospace Engineering, Tohoku University, Sendai, Japan. | ||||
| 2Graduate student, Dpt. of Aerospace Engineering, Tohoku University, Sendai, Japan. | ||||
| 3Professor, Aerospace Engineering, Tohoku University, Sendai, Japan. | ||||
| Abstract | ||||
| ABSTRACT Based on both molecular mechanics and computational structural mechanics, a threedimensional (3D) equivalent beam element is developed to model a C-C covalent bond on carbon nanotubes (CNTs) whereas the van der Waals forces between atoms in the different walls of multi-walled CNTs are described using a rod element. The buckling characteristics of CNTs are conveniently analyzed by using the traditional finite element method (FEM) of a 3D beam and rod model, termed as molecular structural mechanics approach (MSMA). Moreover, to model the CNTs with large length or large diameter, the validity of Euler’s beam buckling theory and a shell model with proper properties defined from the results of MSMA is investigated. The predicted results by this simple continuum mechanics approach agree well with the reported experimental data. | ||||
| Keywords | ||||
| Carbon nanotube; Buckling analysis; Molecular mechanics; Finite Element Analysis | ||||
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