چكيده لاتين :
The classical shell theory, first-order shear deformation theory, and third-order shear deformation
theory are employed to study the natural frequencies of functionally graded cylindrical shells. The
governing equations of motion describing the vibration behavior of functionally graded cylindrical
shells are derived by Hamilton’s principle. Resulting equations are solved using the Navier-type
solution method for a functionally graded cylindrical shell with simply supported edges. The
effects of transverse shear deformation, geometric size, and configurations of the constituent
materials on the natural frequencies of the shell are investigated. Validity of present formulation
was checked by comparing the numerical results with the Love’s shell theory.