Buckling of double-walled carbon nanotubes modeled by solid shell elements

C. M. Wang, Y. Q. Ma, Yingyan Zhang, Kokkeng Ang

    Research output: Contribution to journalArticle

    51 Citations (Scopus)

    Abstract

    A solid shell element model is proposed for the elastic bifurcation buckling analysis of double-walled carbon nanotubes (DWCNTs) under axial compression. The solid shell element allows for the effect of transverse shear deformation which becomes significant in a stocky DWCNT with relatively small radius-to-thickness ratio. The van der Waals (vdW) interaction between the adjacent walls is simulated by linear springs. Using this solid shell element model, the critical buckling strains of DWCNTs with various boundary conditions are obtained and compared with molecular dynamics results and those obtained by other existing shell and beam models. The results obtained show that the solid shell element is able to model DWCNTs rather well, with the appropriate choice of Young’s modulus, tube thickness, and spring constant for modeling the vdW forces.
    Original languageEnglish
    Pages (from-to)114317-114328
    Number of pages12
    JournalJournal of Applied Physics
    Volume99
    Issue number11
    DOIs
    Publication statusPublished - 2006

    Keywords

    • buckling (mechanics)
    • nanotubes

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