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《Journal of Ship Mechanics》 2000-06
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Buckling Analysis and Optimization Design of Composite Cylindrical Shells

LIU Tao, XU Qi-nan, PEI Jun-hou(China Ship Scientific Research Center, Wuxi 214082,China)  
The linear and geometric nonlinear buckling load including transverse shear deformation are calculated by Timoshenko first-order shear deformation theory and Reddy higher-order shear deformation theory respectively.The effects of lamination angle,number of layers and radius-to-thickness ratio on the buckling pressure are analyzed. The combination of a Random-Search approach and the flexible-tolerance method is employed to search for the optimization lamination angles. The Mixed-discrete-optimization program is used to solve the optimization problem in which the lamination angles are assumed to have discrete values. The experiments of the carbon-epoxy cylindrical shell models show that the results presented in this paper are reliable.
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