Postbuckling of nanotube-reinforced composite cylindrical shells in thermal environments, Part I: Axially-loaded shells

摘要: A postbuckling analysis is presented for nanocomposite cylindrical shells reinforced by single-walled carbon nanotubes (SWCNTs) subjected to axial compression in thermal environments. Two kinds of nanotube-reinforced composite (CNTRC) shells, namely, uniformly distributed (UD) and functionally graded (FG) reinforcements, are considered. The material properties FG-CNTRCs assumed be the thickness direction, estimated through a micromechanical model. governing equations based on higher order shear deformation theory with von Karman-type kinematic nonlinearity. effects also included CNTRCs temperature-dependent. singular perturbation technique employed determine buckling loads equilibrium paths. numerical illustrations concern behavior axially-loaded, perfect imperfect, FG-CNTRC under different sets environmental conditions. results UD-CNTRC shell, which special case present study, compared those shell. show that linear reinforcements can increase load as well strength shell compression. reveal CNT volume fraction has significant effect CNTRC shells.