FREQUENCY OF NON-LINEAR DYNAMIC RESPONSE OF A POROUS FUNCTIONALLY GRADED CYLINDRICAL PANELS

In this article, a nonlinear dynamical investigation of porose functionally graded cylindrical panels using proposed analytical model is carried out. The material's properties are considered to be porosity-dependent and in the thickness direction, corresponding power-law distribution. classical shell theory, with geometrical shape von Karman–Donnell, employed get Lagrange motion equations. By applying Galerkin procedure, system dynamic vibration equations found. natural frequencies amplitude vibrations obtained by fourth-order Runge–Kutta approach. numerical analyses, effects porosity factor, index, porous FGM thickness, frequency–amplitude relation, excitation force on response thin investigated. Through results, it discovered that coefficients have important FG structures. It leads reduction 5.74 % at 10% pores.