The Safety Assessment of the Connecting Cable in Deep Water Unmanned Underwater Vehicle

J. Ocean Eng. Technol. 2006;20(6):75-81.

Nho, In-Sik;Choi, Byoung-Gy;Lee, Jong-Moo;

Dept. of Naval Architecture & Ocean Engineering, Chungnam National University;Korean Register of Shipping;Korea Ocean Research & Development Institute;

심해 잠수정 연결케이블의 안전성 평가에 관한 연구

노인식;최병기;이종무;

충남대학교 선박해양공학과;한국선급;한국해양연구원;

Keywords: UUN(Advanced unmanned underwater vehicle), Umbilical cable, Snapping, Impact load, Nonlinear dynamic analysis, $Newmark-{eta}$ method, Safety assessment

핵심용어: 무인잠수정, 1차케이블, 스내핑, 충격하중, 비선형 동적해석, 안정성 평가

Abstract

In this study, the dynamic response of the umbilical cable in a deep-water unmanned underwater vehicle system was analyzed. In order to analyze the forces acting on the cable, the launcher and umbilical cable were modeled by the simple 1-D mass-spring system. Damping and dynamic analysis was carried out by a direct time integration scheme using the $Newmark-{eta}$ method with inverse iteration procedure, considering the nonlinear drag forces acting on the launcher. The obtained results of the present study can be used for the design of connecting the structure of the launcher and cable of the UUV system.