Effects of rotational restraints on the thermal buckling of carbon nanotube

YAYLI M. Ö.

MICRO & NANO LETTERS, vol.14, no.2, pp.158-162, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 2
  • Publication Date: 2019
  • Doi Number: 10.1049/mnl.2018.5428
  • Journal Name: MICRO & NANO LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.158-162
  • Keywords: carbon nanotubes, buckling, springs (mechanical), Fourier series, carbon nanotube, Timoshenko beam model, nonlocal elasticity theory, nonlocal Euler beam model, thermal effects, rotational restraint springs, thermal buckling, trigonometric Fourier series, shear correction factor, C, NONLOCAL ELASTICITY, FREE-VIBRATION, TORSION
  • Bursa Uludag University Affiliated: Yes

Abstract

The thermal buckling response of nanotubes with rotational restraints is investigated using a Timoshenko beam model with non-local elasticity theory. Two trigonometric (Fourier) series are selected to analyse the thermal buckling of the non-local Timoshenko nanotube with rotational restraints. Explicit equations are obtained for the boundary values with a coefficient matrix. In particular, the new method can be degenerated to the non-local Euler beam model by assigning proper value to the shear correction factor. The main advantage of the present technique is its capability of dealing with deformable or rigid supporting conditions. Several numerical examples are solved to asses proposed approach reliability. The results show that thermal buckling including the thermal effects are lower than those without the thermal effects when the temperature rises. The rotational restraint springs have significant effects on the buckling response of nanotubes.