Re-examination of nonlinear vibration and nonlinear bending of porous sandwich cylindrical panels reinforced by graphene platelets

Abstract This article re-examines the nonlinear vibration and bending responses of porous sandwich cylindrical panels reinforced by graphene platelets resting on elastic foundations in thermal environments. The platelet-reinforced composite (GPLRC) core is assumed to be multilayers, each layer may have different porosity coefficient values achieve a piece-wise functionally graded pattern. By introducing an inhomogeneous model instead equivalent isotropic (EIM), Young’s moduli along with shear modulus GPLRC are predicted through generic Halpin–Tsai which included. thermomechanical properties metal face sheets temperature-dependent. Governing equations motion for formulated based Reddy’s third-order deformation theory coupled von Kármán strain–displacement relationships. In modeling, panel–foundation interaction effects also considered. analytical solutions problems obtained applying two-step perturbation approach. Numerical studies performed compare results from present EIM. confirm that EIM not suitable linear free analysis core, but valid cases analyses same panel Pasternak foundations.