Influence of Different Static Equilibrium Calculation Methods on the Dynamic Response of Marine Cables during the Releasing Process: Review and a Case Study
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 t...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/4/764 |
| _version_ | 1797604817100603392 |
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| author | Dapeng Zhang Bowen Zhao Jiyuan Sun Yi Zhang Keqiang Zhu Haoyu Jiang |
| author_facet | Dapeng Zhang Bowen Zhao Jiyuan Sun Yi Zhang Keqiang Zhu Haoyu Jiang |
| author_sort | Dapeng Zhang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-11T04:52:08Z |
| format | Article |
| id | doaj.art-89cc9883fc51420c8dfe30f8060f1a3d |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-11T04:52:08Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-89cc9883fc51420c8dfe30f8060f1a3d2023-11-17T19:55:42ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-03-0111476410.3390/jmse11040764Influence of Different Static Equilibrium Calculation Methods on the Dynamic Response of Marine Cables during the Releasing Process: Review and a Case StudyDapeng Zhang0Bowen Zhao1Jiyuan Sun2Yi Zhang3Keqiang Zhu4Haoyu Jiang5Ship and Maritime College, Guangdong Ocean University, Zhanjiang 524088, ChinaOcean College, Zhejiang University, Zhoushan 316000, ChinaOcean College, Zhejiang University, Zhoushan 316000, ChinaShip and Maritime College, Guangdong Ocean University, Zhanjiang 524088, ChinaFaculty of Maritime and Transportation, Ningbo University, Ningbo 315211, ChinaSchool of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 316021, ChinaWhen 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.https://www.mdpi.com/2077-1312/11/4/764marine cablesdifferent static equilibrium calculation methodsdynamic analysislumped mass methoddynamic characteristics |
| spellingShingle | Dapeng Zhang Bowen Zhao Jiyuan Sun Yi Zhang Keqiang Zhu Haoyu Jiang Influence of Different Static Equilibrium Calculation Methods on the Dynamic Response of Marine Cables during the Releasing Process: Review and a Case Study Journal of Marine Science and Engineering marine cables different static equilibrium calculation methods dynamic analysis lumped mass method dynamic characteristics |
| title | Influence of Different Static Equilibrium Calculation Methods on the Dynamic Response of Marine Cables during the Releasing Process: Review and a Case Study |
| title_full | Influence of Different Static Equilibrium Calculation Methods on the Dynamic Response of Marine Cables during the Releasing Process: Review and a Case Study |
| title_fullStr | Influence of Different Static Equilibrium Calculation Methods on the Dynamic Response of Marine Cables during the Releasing Process: Review and a Case Study |
| title_full_unstemmed | Influence of Different Static Equilibrium Calculation Methods on the Dynamic Response of Marine Cables during the Releasing Process: Review and a Case Study |
| title_short | Influence of Different Static Equilibrium Calculation Methods on the Dynamic Response of Marine Cables during the Releasing Process: Review and a Case Study |
| title_sort | influence of different static equilibrium calculation methods on the dynamic response of marine cables during the releasing process review and a case study |
| topic | marine cables different static equilibrium calculation methods dynamic analysis lumped mass method dynamic characteristics |
| url | https://www.mdpi.com/2077-1312/11/4/764 |
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