Abstract
Based on both molecular mechanics and computational structural mechanics, a three-dimensional (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.
| Original language | English |
|---|---|
| Pages (from-to) | 2187-2190 |
| Number of pages | 4 |
| Journal | Key Engineering Materials |
| Volume | 353-358 |
| Issue number | PART 3 |
| DOIs | |
| Publication status | Published - 2007 Jan 1 |
| Event | Asian Pacific Conference for Fracture and Strength (APCFS'06) - Sanya, Hainan Island, China Duration: 2006 Nov 22 → 2006 Nov 25 |
Keywords
- Carbon nanotube
- Compressive instability
- Finite element method
- Molecular mechanics
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering