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Stability analysis of carbon nanotubes under electric fields and compressive loading

Sadeghi, M ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1088/0022-3727/41/20/205411
  3. Publisher: 2008
  4. Abstract:
  5. The mechanical stability of conductive, single-walled carbon nanotubes (SWCNTs) under applied electric field and compressive loading is investigated. The distribution of electric charges on the nanotube surface is determined by employing a method based on the classical electrostatic theory. For mechanical stability analysis, a hybrid atomistic-structural element is proposed, which takes into account the nonlinear features of the stability. Nonlinear stability analysis based on an iterative solution procedure is used to determine the buckling force. The coupling between electrical and mechanical models is accomplished by adding Coulomb interactions to the mechanical model. The results show that in the presence of uniform axial electric fields, stability of SWCNTs under compressive axial loading increases. Also, the effects of CNT geometry on the mechanical stability in the presence of electric fields are studied and the dependence of the increase in the stability of the nanotube on length and diameter is shown. © 2008 IOP Publishing Ltd
  6. Keywords:
  7. Electric charge ; Electric discharges ; Electric field effects ; Electric field measurement ; Electric fields ; Electrostatics ; Mechanical stability ; Nanocomposites ; Nanostructured materials ; Nanostructures ; Nanotubes ; Single-walled carbon nanotubes (SWCN) ; Applied electric fields ; Axial loadings ; Compressive loadings ; Electrostatic theories ; Iterative solutions ; Mechanical models ; Nanotube surfaces ; Nonlinear features ; Nonlinear stability analysis ; Stability analyses ; Structural elements ; Carbon nanotubes
  8. Source: Journal of Physics D: Applied Physics ; Volume 41, Issue 20 , 2008 ; 00223727 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/0022-3727/41/20/205411/meta