Critical strain of carbon nanotubes: An atomic-scale finite element study

X. Guo, A. Y T Leung, Hanqing Jiang, X. Q. He, Y. Huang

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

This paper employs the atomic-scale finite element method (AFEM) to study critical strain of axial buckling for carbon nanotubes (CNTs). Brenner et al. "second-generation" empirical potential is used to model covalent bonds among atoms. The computed energy curve and critical strain for (8, 0) single-walled CNT (SWNT) agree well with molecular dynamics simulations. Both local and global buckling are achieved, two corresponding buckling zones are obtained, and the global buckling behavior of SWNT with a larger aspect ratio approaches gradually to that of a column described by Euler's formula. For double-walled CNTs with smaller ratio of length to outer diameter, the local buckling behavior can be explained by conventional shell theory very well. AFEM is an efficient way to study buckling of CNTs.

Original languageEnglish (US)
Pages (from-to)347-351
Number of pages5
JournalJournal of Applied Mechanics, Transactions ASME
Volume74
Issue number2
DOIs
StatePublished - Mar 1 2007

    Fingerprint

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this