“…[2,3] are the excellent survey of the work up to 2008 on numerical assessment of classical and refined theories for the analysis of sandwich plates. In these studies, various numerical methods such as Bessel functions [4], Galrkin's method [5], spline finite point method [6], B-spline FSM [7], Discrete layer annular finite element method [8], isoparametric finite element method [9], Finite element method [10], 3D FEM [11], Cubic spline method [12] have been used to obtain the natural frequencies of various models under different constraints.…”