mechanical Engineering, Kashan university
Mechainical Engineering, Shahid Bahounar university of Kerman
mechanical Engineering, S. Bahonar University
School of Civil Engineering and Transportation, South China University of Technology
In this paper, an elastic shell model is presented for postbuckling prediction of a long thinwalledcylindrical shell under axial compression. The Ritz method is applied to solve the governingequilibrium equation of a cylindrical shell model based on the von-Karman type nonlinear differentialequations. The postbuckling equilibrium path is obtained using the energy method for a long thin-walledcylindrical shell. Furthermore, the postbuckling relationship between the axial stress and end-shorteningis investigated with different geometric parameters. Also, this theory is used for postbuckling analysis ofa single-walled carbon nanotube without considering the small scale effects. Numerical results revealthat the single-walled carbon nanotube under axial compression has an unstable postbuckling behavior.