semi-analytical solution for free vibration analysis of thick laminated curved panels with power-law distribution fg layers and finite length via two-dimensional gdq method

This paper deals with free vibration analysis of thick laminated curved panels with finite length, based on the three-dimensional elasticity theory. because of using two-dimensional generalized differential quadrature method, the present approach makes possible vibration analysis of cylindrical panels with two opposite axial edges simply supported and arbitrary boundary conditions including free, simply supported and clamped at the curved edges. the material properties vary continuously through the layers thickness according to a three-parameter power-low distribution. it is assumed that the inner surfaces of the fg sheets are metal rich while the outer surfaces of the layers can be metal rich, ceramic rich or made of a mixture of two constituents. the benefit of using the considered power-law distribution is to illustrate and present useful results arising from symmetric and asymmetric profiles. the effects of geometrical and material parameters together with the boundary conditions on the frequency parameters of the laminated fg panels are investigated. the obtained results show that the outer fgm layers have significant effects on the vibration behavior of cylindrical panels. this study serves as a benchmark for assessing the validity of numerical methods or two-dimensional theories used to analysis of laminated curved panels.