복합재 반자율 무인잠수정(SAUV)의 내압선체 설계, 구조해석 및 내압시험 결과에 관한 검토

Abstract

A Semi-Autonomous Underwater Vehicle (SAUV), capable of simple work on the seabed, is under development in KRISO-KORDI. This SAUV pressure vessel is composed of fiberglass reinforced plastic (FRP), and is also manufactured to carry electronic equipment. The objective of this paper is to describe the safety check for the pressure vessel. This is achieved by conducting structural analysis and testing in a pressure tank. Strain and stress test results, under unit load, are obtained by using ANSYS in linear structural analysis. Local buckling analysis are performed with NASTRAN at the middle of the cylindrical hull. The first test, using linear structural analysis, is unsuccessful, as buckling occurred. During the second test, linear structural analysis, combined with local buckling analysis, is conducted. There is no buckling up to 250 m when both ANSYS and NASTRAN are used.1. 서 론