Finite element model and size-dependent stability analysis of boron nitride and silicon carbide nanowires/nanotubes

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Numanoglu H. M., Mercan K., CİVALEK Ö.

SCIENTIA IRANICA, cilt.26, sa.4, ss.2079-2099, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 26 Sayı: 4
  • Basım Tarihi: 2019
  • Doi Numarası: 10.24200/sci.2019.52517.2754
  • Dergi Adı: SCIENTIA IRANICA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2079-2099
  • Anahtar Kelimeler: Boron nitride, Silicon carbide, Nanotube, Nanowire, Buckling, WALLED CARBON NANOTUBES, FREE-VIBRATION ANALYSIS, STRAIN GRADIENT ELASTICITY, TIMOSHENKO BEAM MODEL, GAS SENSORS, SHEAR DEFORMATION, BUCKLING ANALYSIS, POSTBUCKLING ANALYSIS, CONTINUUM THEORY, SURFACE STRESS
  • Akdeniz Üniversitesi Adresli: Evet

Özet

In the present paper, stability analysis of boron nitride and silicon carbide nanotubes/nanowires is carried out using different size-effective theories, finite element method, and computer software. Size-effective theories used in this paper include Modified Couple Stress Theory (MOST), Modified Strain Gradient Theory (MSGT), Nonlocal Elasticity Theory (NET), Surface Elasticity Theory (SET), and Nonlocal Surface Elasticity Theory (NSET). As for the computer software, ANSYS and COMSOL multiphysics are used. Comparative results of theories and software and literature are given in the result section. Comparative results are in good harmony. In conclusion, it is clearly seen that the nonlocal elasticity theory yields the lowest results for every modes and structures, while the modified strain gradient theory yields the highest results. (C) 2019 Sharif University of Technology. All rights reserved.