Optimization of composite cylinder subjected to hydrostatic pressure using customized evolutionary algorithm

The structure for optimization is a composite cylinder subjected to hydrostatic pressure. The customization is in the method of incorporating the balanced laminate constraint using a while loop which not only improves buckling resistance but also drastically reduces the computation time. The formulation of the objective function is carried out in a novel way. The third customization is in considering geometric variables along with layup in optimization to arrive at the most optimal configuration. The results suggest a significant increase in buckling load ranging from 61.3% to 92.2% and a reduction by about 76.3% in time required for optimization.