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정태환(TAE-HWAN CHUNG),노인식(IN-SIK NHO),이판묵(PAN-MOOK LEE),이종무(CHONG-MOO LEE),임용곤(YONG-CON LIM) 한국해양공학회 2005 韓國海洋工學會誌 Vol.19 No.1
This paper presents the optimum design of cylindrical shell under external pressure loading. Two kinds of material, Al7075-T6, Ti-6Al-4V, are considered. For each material, the design variable is a thickness of the unstiffened parallel middle body shell, and the state variable, constraint, is hoop stress and the object function is total weight of the cylindrical shell. Optimization is performed by conventional FE Program, ANSYS. In addition, buckling analysis is performed for the middle body of the cylindrical shell. Finally, we calculates the payload of the cylindrical shell to keep neutral buoyancy with optimized thickness in deep-sea applications.