In this Paper, the authors first analyze the elastic stiffness of composite material sandwich plates, and the equivalent composite stiffness factors are established. Then, using a semi-analysis finite element method, the authors set up the displacement functions and derived the,governing equations by divorcing this plate along its width and adopting the vibration functions of thick beams along its length and thickness. Furthermore, an example has been computed with this method. It has been found that the precision of proposed me...
