Design Optimization of Pressure Vessel of Small Autonomous Underwater Vehicle

J. Ocean Eng. Technol. 2005;19(1):95-99.

CHUNG TAE-HWAN;HO IN-SIKN;LEE PAN-MOOK;LEE CHONGMOO;LIM YONGGON;

Naval Architecture and Ocean engineering, Chungnam National University;Naval Architecture and Ocean engineering, Chungnam National University;Ocean Development System Laboratory, KORDI;Ocean Development System Laboratory, KORDI;Ocean Development System La

심해 자율 무인잠수정(AUV)의 내압선체 설계 최적화

정태환;노인식;이판묵;이종무;임용곤;

충남대학교 선박해양공학과;충남대학교 선박해양공학과;한국해양연구원 해양개발시스템연구본부;한국해양연구원 해양개발시스템연구본부;한국해양연구원 해양개발시스템연구본부;

Keywords: AUV(Autonomous Underwater Vehicle), Pressure Vessel, Optimization, PEA

핵심용어: 자율 무인잠수정, 내압선체, 최적화, 유한요소해석

Abstract

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.