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Structural Engineering and Mechanics Volume 18, Number 4, October 2004 , pages 429-440 DOI: https://doi.org/10.12989/sem.2004.18.4.429 |
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Dynamic analysis of ROV cable considering the coupling motion of ROV cable systems |
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Kyu Nam Cho, Ha Cheol Song and Do Chun Hong
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| Abstract | ||
| Remotely Operated Vehicle of 6000-meters is a new conceptual equipment made to replace the manned systems for investigating the deep-sea environment, and all of the ROV systems in operational condition strongly depend on the connecting cables. In this point of view dynamics of the ROV cable system is very important for operational and safety aspects as a cable generally encounters great tension. Researches have been executed on this problem, and most of papers have been mainly focused on the operational condition of ROV system in deep sea. This paper presents the dynamic cable response analysis during ROV launching condition rather than the operational one in order to provide the design guide of a ROV cable system in this circumstance, considering the coupling effects between cable and wave-induced ship motion. To obtain the variations of cable tensions during a ROV launching, a pre-stressed harmonic response analysis was carried out. Wave-induced tensions of the cable during ROV launching were obtained in real sea states using FE modeling, and the basic design guide of a ROV cable system was obtained. | ||
| Key Words | ||
| ROV cable system; coupling motion; dynamic cable response; pre-stressed harmonic response analysis; head and beam seas; significant wave. | ||
| Address | ||
| Kyu Nam Cho; Dept. of Naval Architecture and Ocean Engineering, Hongik Univ., Jochiwon, Chungnam 339-701, Korea Ha Cheol Song; Research Institute of Marine Systems Eng., Seoul Nat. Univ., San 56-1, Shillim-dong, Kwankak-gu, Seoul 152-744, Korea Do Chun Hong; Korea Research Institute of Ships and Ocean Engineering, 171, Jang-dong, Yusung-gu, Daejeon 305-343, Korea | ||