Nonlinear response of doubly curved sandwich panels with CNT-reinforced composite core and elastically restrained edges subjected to external pressure in thermal environments

An analytical investigation on the nonlinear response of doubly curved panels constructed from homogeneous face sheets and carbon nanotube reinforced composite (CNTRC) core subjected to external pressure in thermal environments is presented this paper. Carbon nanotubes (CNTs) are into layer through uniform or functionally graded distributions. The properties constituents assumed be temperature dependent effective CNTRC determined using an extended rule mixture. Governing equations established within framework first order shear deformation theory taking account geometrical imperfection, von Kármán–Donnell nonlinearity, panel-foundation interaction elasticity tangential edge restraints. These solved approximate solutions Galerkin method for simply supported panels. results reveal that load carrying capacity sandwich stronger when boundary edges more rigorously restrained thicker. Furthermore, elevated has deteriorative beneficial influences bearing capability with movable edges, respectively.