Analysis and Optimization of Laminated Circular Cylindrical Shell

Structural optimization using computational tools has become a major research field in recent years. The paper deals with a sizing optimization analysis of laminated circular cylindrical shell. For thin-walled shells, the classical shell theory is capable of accurately predicting the shell behavior. The weight minimization subjected to displacement constraint within the numerical optimization of the circular cylindrical shell is done. The thickness of the shell laminate roof under constant pressure loading is being searched in the optimization process. The boundary conditions of the shell laminate roof are assumed to be a fully pin support. Within the general optimization process, the Modified Feasible Direction method is used. The performance of the composite structural system is evaluated through finite element analysis of shell elements carried out using COSMOS/M. Key-Words: laminate composite, homogenization, circular cylindrical shell, classical shell theory, sizing optimization