A Numerical Analysis for the Dynamic Behavior of the Umbilical Cable of a Deep-sea Unmanned Underwater Vehicle

J. Ocean Eng. Technol. 2005;19(3):31-38.

Kwon Do-Young,Park Han-Il,Jung Dong-Ho

Div. of Ocean Development Engineering Korea Maritime University,Div. of Ocean Development Engineering Korea Maritime University,Korea Research Institute of Ship and Ocean Engineering KORDI

심해 무인잠수정 1차 케이블의 동적거동 수치해석

권도영,박한일,정동호

한국해양대학교 해양개발공학부,한국해양대학교 해양개발공학부,한국해양연구원 해양시스템안전연구소

Keywords: Deep-sea Unmanned Underwater Vehicle, Numerical Analysis, Finite Difference Method, Cable Tension, Cable Axial Vibration, Umbilical Cable

핵심용어: 심해무인잠수정, 수치해석, 유한차분법, 케이블장력, 케이블 축 방향 진동, 1차 케이블

Abstract

Ocean developments gradually move to deep-sea in the 21 century. A deep-sea unmanned underwater vehicle is one of important tools for ocean resource survey. A marine cable plays an important role for the safe operation and signal transmission of a deep-sea unmanned underwater vehicle. The umbilical cable of a deep-sea unmanned underwater vehicle is excited by surface vessel motion and shows non-linear dynamic behaviors. A numerical method is necessary for analysing the dynamic behavior of a marine cable. In this study, a numerical program is established based on a finite difference method. The program is appled to 6000m long cable for a deep-sea unmanned underwater vehicle and shows good reasonable results.