Nonlinear Large Amplitude Vibration of Lattice Core CNTRC Cylindrical Panels Resting on Elastic Foundation

In this paper, a new design of sandwich cylindrical panels is proposed with two functionally graded carbon nanotube reinforced composite (FG-CNTRC) face sheets and lattice core. The lattice core layer is modeled by improving the novel smeared technique for stiffener according to the first-order shear deformation theory (FSDT). Nonlinear vibration behavior of first-order shear deformable cylindrical panels with the geometric nonlinearities is analyzed in present paper. The stress function is considered and the Galerkin method is used to formulate the nonlinear motion equation system. Nonlinear dynamic responses of panels can be achieved by using the fourth order Runge-Kutta method. Numerical investigations can show the very large effects of lattice core layer, volume fraction of carbon nanotube, type of carbon nanotube distribution on the nonlinear vibration behavior of sandwich FG-CNTRC cylindrical panels.