Optimization for Buckling and Postbuckling Behavior of Stiffened Fiber Reinforced Composite Panels

보강된 섬유강화 복합재료 패널의 좌굴해석 및 파손강도의 최적 설계

In this study, fiber orientation of stiffener was conducted to increase buckling load or failure load in each case with a different design value and a different objective function for stiffened laminated composite panel of I-type under compression loading. Regarding each of buckling load or failure load as objective function, optimum design was carried out. In respect of optimum design, it was investigated that optimum shape for buckling could improve fail load for postbuckling, because it was difficult to investigate the optimization of postbuckling which need long analysis times for nonlinear analysis.