INVESTIGATION OF NONLINEAR DYNAMIC RESPONSES OF SANDWICH-FGM CYLINDRICAL SHELLS CONTAINING FLUID RESTING ON ELASTIC FOUNDATIONS IN THERMAL ENVIRONMENT

The main aim of the present article is to investigate nonlinear dynamic responses of sandwich-FGM circular cylinder shell containing fluid and surrounded by Winkler- Pasternak elastic mediums under mechanical loads in the thermal environment based on classical shell theory. Bubnov-Galerkin method and fourthorder Runge-Kutta method are employed to determine nonlinear dynamic buckling of cylindrical shell. Effects of temperature environment, foundations, structure's geometrical parameters, material parameters and fluid on the nonlinear dynamic responses of sandwich-FGM circular cylinder shell are investigated.