Bending, buckling and free vibration of non-homogeneous composite laminated cylindrical shells using a refined first-order theory

摘要

The bending, buckling and free vibration problems of non-homogeneous composite laminated cylindrical shells are considered. Hamil- ton-Reissner's mixed variational principle is used to deduce a consistent first-order theory of composite laminated cylindrical shells with non-homogeneous elastic properties. The governing equations with their required boundary conditions are derived without introducing any shear correction factors. Numerical results for the transverse defections, stresses, natural frequencies and critical buckling loads are presented to show the advantages of this theory. The influences of the non-homogeneity and thickness ratio on the shell structural response are investigated. The study concludes that the inclusion of the non-homogeneity effect is required, even if it is weak, for predicting the actual structural response of the shells. non-homogeneous elastic p