Influence of Different Static Equilibrium Calculation Methods on the Dynamic Response of Marine Cables during the Releasing Process: Review and a Case Study
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Published:2023-03-31
Issue:4
Volume:11
Page:764
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ISSN:2077-1312
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Container-title:Journal of Marine Science and Engineering
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language:en
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Short-container-title:JMSE
Author:
Zhang Dapeng1ORCID, Zhao Bowen2ORCID, Sun Jiyuan2, Zhang Yi1, Zhu Keqiang3, Jiang Haoyu4
Affiliation:
1. Ship and Maritime College, Guangdong Ocean University, Zhanjiang 524088, China 2. Ocean College, Zhejiang University, Zhoushan 316000, China 3. Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China 4. School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 316021, China
Abstract
When analyzing the dynamic characteristics of marine cables, the static equilibrium state must first be calculated; a dynamic analysis can then be carried out based on the static equilibrium. Since the calculation of the static equilibrium is the basis of dynamic calculation, different methods for the calculation of the static equilibrium will have important impacts on the dynamic response characteristics of cables, which result in cables having different dynamic characteristics. This paper summarizes the research progress in the effects of different methods for the calculation of the static equilibrium on the dynamic response of marine cables during the releasing process, and current methods for their static calculation are more comprehensively developed as well as being more accurate. To study the influence of different static equilibrium calculation methods, with the reference of some specific parameters of a mooring cable, combined with specific sea conditions, through the necessary simplification of the cable releasing process, based on the lumped mass method, mooring cables are discretized into the lumped mass model, and dynamic analysis models of the releasing process of mooring cables under three methods for the calculation of the static equilibriums (the fast static equilibrium calculation method, the analytic catenary calculation method, and the catenary calculation method) are established. The dynamic characteristics of the spatial configurations of mooring cables based on different static equilibrium calculation methods are obtained through time domain coupling analyses. It was found that if the static equilibrium of a cable is calculated, taking into account gravity, buoyancy, wave current resistance, inertia forces, and the axial stiffness of a cable, then the characteristics of a cable during dynamic descent are closest to that of a real situation. The calculation results have a certain guiding significance for specific engineering practices.
Funder
Program for Scientific Research Start-up Funds of Guangdong Ocean University Zhanjiang Marine Youth Talent Project—Comparative Study and Optimization of Horizontal Lifting of Subsea Pipeline National Natural Science Foundation of China
Subject
Ocean Engineering,Water Science and Technology,Civil and Structural Engineering
Reference83 articles.
1. Towed-array history, 1917–2003;Lemon;IEEE J. Ocean. Eng.,2004 2. Dynamic analysis of an axially moving underwater pipe conveying pulsating fluid;Luo;Front. Mar. Sci.,2022 3. Simos, A.N., and Fujarra, A.L.C. (2004, January 23–28). Dynamic Tension on Mooring Lines. Comparison of Numerical and Experimental Results. Proceedings of the Fourteenth International Offshore and Polar Engineering Conference, Toulin, France. 4. Berteaux, H.O. (1976). Buoy Engineering, John Wiley and Sons. 5. Nakajima, T., Motora, S., and Fujino, M. (1982, January 3–6). On the dynamic analysis of multi-component mooring lines. Proceedings of the Offshore Technology Conference, Houston, TX, USA.
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