FREQUENCY OPTIMIZATION OF FUNCTIONALLY GRADED LAMINATED CYLINDRICAL SHELLS

We used the first order shear deformation theory (FSDT) coupled with the finite element method (FEM) to study free vibrations of simply supported functionally graded (FG) anisotropic laminated cylindrical shell with the objective of maximizing of its natural frequencies. The design variable is the p that maximizes the objective function. We assume that a FG anisotropic shell in which the fiber orientations vary smoothly through shell thickness. The parametric studies are performed to investigate the effect of shell aspect ratio on the optimal designs and the results are compared