Nonlinear buckling and postbuckling of spiral stiffened FG-GPLRC cylindrical shells subjected to torsional loads

Abstract

The nonlinear buckling behavior of functionally graded graphene platelet reinforced composite (FG-GPLRC) cylindrical shells reinforced by ring, stringer and/or spiral FG-GPLRC stiffeners under torsional loads is studied by an analytical approach. The governing equations are based on the Donnell shell theory with geometrical nonlinearity of von Kármán-Donnell-type, combining the improvability of Lekhnitskii’s smeared stiffeners technique for spiral FG-GPLRC stiffeners. The effects of mechanical and thermal loads are considered in this paper. The number of spiral stiffeners, stiffener angle, and graphene volume fraction, are numerically investigated. A very large effect of spiral FG-GPLRC stiffeners on the nonlinear buckling behavior of shells in comparison with orthogonal FG-GPLRC stiffeners is approved in numerical results.

On the wave propagation characteristics of functionally graded porous shells

“…Researchers considered five kinds of distributions of uniaxially aligned reinforcements along with the thickness of shell structures, i.e., one uniform and four functionally graded distributions. Recent articles on static and buckling analysis include Chang and Zhou (2022); Le, Pham, Bui, and Do (2022b); Talebi, Hedayati, Sadighi, and Ashoori (2022); Vu and Hoang (2022a).…”

Nonlinear buckling and postbuckling behaviors of porous FG-GPLRC cylindrical shells with stiffeners subjected to external pressure

“…The higher-order shear deformable FG-GPLRC annular plates were considered in thermal vibration problems using the generalized differential quadrature method and Hamilton's principle [22]. Nonlinear torsional buckling responses of spirally stiffened FG-GPLRC cylindrical shells were presented [23] utilizing the improved smeared technique for stiffener and Donnell shell theory.…”