Buckling analysis of DWCNTs under 2-D magnetic fields based on surface sinsuidal strain gradient theory

چکیده مقاله

Buckling analysis of embedded double-walled carbon nanotubes (DWCNTs) conveying fluid under 2D magnetic fields is investigated in this study based on sinusoidal shear deformation beam theory (SSDBT) along with strain gradient theory, are used for modeling of DWCNTs. The system is surrounded by elastic medium which is simulated as visco-Pasternak foundation. Gurtin–Murdoch elasticity theory is applied for considering the effects of surface stress. Motion equations are calculated via Hamilton's principle. The differential quadrature method (DQM) is applied for obtaining the critical load buckling of system. The detailed parametric study is conducted, focusing on the combined effects of the nonlocal parameter, magnetic field, visco-Pasternak foundation and surface stress effect on the critical buckling load of DWCNTs. The results depict that the effect of magnetic field on critical buckling load of DWCNTs is extremely significant.