Simplification of mooring line number for model testing based on equivalent of vessel/mooring coupled dynamics
To decrease the complexity of experimental setup that often results in low reliability of the experimental results for typical offshore floating structures with increasingly excessive mooring lines, a mooring line number simplification methodology is proposed based on equivalent of the vessel/moorin...
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| Veröffentlicht in: | Journal of marine science and technology 2020-06, Vol.25 (2), p.573-588 |
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| creator | Liang, Mingxiao Xu, Shengwen Wang, Xuefeng Ding, Aibing |
| description | To decrease the complexity of experimental setup that often results in low reliability of the experimental results for typical offshore floating structures with increasingly excessive mooring lines, a mooring line number simplification methodology is proposed based on equivalent of the vessel/mooring coupled dynamics for vessel with original and simplified mooring systems. The Non-dominated Sorting Genetic Algorithms-II (NSGA-II) is adopted to achieve the static restoring forces equivalent, where the line length, axial stiffness and submerged mass of the simplified mooring system are obtained. The line diameter is then determined based on dynamic restoring forces equivalent when the mooring system is exerted by forced oscillations. Using correlation coefficients, the vessel/mooring coupled dynamics of vessel with original and simplified mooring systems are compared to determine the optimal simplified mooring system. The feasibility of the proposed methodology is demonstrated by an application for a VLFS’s mooring system comprising 20 mooring lines. Two simplified mooring systems are obtained with the correlation coefficients of coupled vessel/mooring dynamics lager than 0.97. It can be concluded that the proposed method can be used as a useful tool to guide mooring line number simplification for model testing. |
| doi_str_mv | 10.1007/s00773-019-00664-x |
| format | Article |
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The Non-dominated Sorting Genetic Algorithms-II (NSGA-II) is adopted to achieve the static restoring forces equivalent, where the line length, axial stiffness and submerged mass of the simplified mooring system are obtained. The line diameter is then determined based on dynamic restoring forces equivalent when the mooring system is exerted by forced oscillations. Using correlation coefficients, the vessel/mooring coupled dynamics of vessel with original and simplified mooring systems are compared to determine the optimal simplified mooring system. The feasibility of the proposed methodology is demonstrated by an application for a VLFS’s mooring system comprising 20 mooring lines. Two simplified mooring systems are obtained with the correlation coefficients of coupled vessel/mooring dynamics lager than 0.97. It can be concluded that the proposed method can be used as a useful tool to guide mooring line number simplification for model testing.</description><identifier>ISSN: 0948-4280</identifier><identifier>EISSN: 1437-8213</identifier><identifier>DOI: 10.1007/s00773-019-00664-x</identifier><language>eng</language><publisher>Tokyo: Springer Japan</publisher><subject>Automotive Engineering ; Classification ; Coefficients ; Correlation ; Correlation coefficient ; Correlation coefficients ; Dynamics ; Engineering ; Engineering Design ; Engineering Fluid Dynamics ; Equivalence ; Feasibility studies ; Floating structures ; Forced oscillations ; Forces ; Genetic algorithms ; Lager ; Lines ; Mathematical models ; Mechanical Engineering ; Methods ; Model testing ; Mooring ; Mooring lines ; Mooring systems ; Offshore ; Offshore Engineering ; Offshore structures ; Original Article ; Oscillations ; Simplification ; Sorting algorithms ; Stiffness ; Testing ; Vessels</subject><ispartof>Journal of marine science and technology, 2020-06, Vol.25 (2), p.573-588</ispartof><rights>The Japan Society of Naval Architects and Ocean Engineers (JASNAOE) 2019</rights><rights>COPYRIGHT 2020 Springer</rights><rights>Journal of Marine Science and Technology is a copyright of Springer, (2019). All Rights Reserved.</rights><rights>The Japan Society of Naval Architects and Ocean Engineers (JASNAOE) 2019.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c386t-bc9b412d700d82488da0c6a0f17bde7f48600854337c76a4214a96b575224b403</citedby><cites>FETCH-LOGICAL-c386t-bc9b412d700d82488da0c6a0f17bde7f48600854337c76a4214a96b575224b403</cites><orcidid>0000-0001-6611-3161</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00773-019-00664-x$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00773-019-00664-x$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Liang, Mingxiao</creatorcontrib><creatorcontrib>Xu, Shengwen</creatorcontrib><creatorcontrib>Wang, Xuefeng</creatorcontrib><creatorcontrib>Ding, Aibing</creatorcontrib><title>Simplification of mooring line number for model testing based on equivalent of vessel/mooring coupled dynamics</title><title>Journal of marine science and technology</title><addtitle>J Mar Sci Technol</addtitle><description>To decrease the complexity of experimental setup that often results in low reliability of the experimental results for typical offshore floating structures with increasingly excessive mooring lines, a mooring line number simplification methodology is proposed based on equivalent of the vessel/mooring coupled dynamics for vessel with original and simplified mooring systems. The Non-dominated Sorting Genetic Algorithms-II (NSGA-II) is adopted to achieve the static restoring forces equivalent, where the line length, axial stiffness and submerged mass of the simplified mooring system are obtained. The line diameter is then determined based on dynamic restoring forces equivalent when the mooring system is exerted by forced oscillations. Using correlation coefficients, the vessel/mooring coupled dynamics of vessel with original and simplified mooring systems are compared to determine the optimal simplified mooring system. The feasibility of the proposed methodology is demonstrated by an application for a VLFS’s mooring system comprising 20 mooring lines. Two simplified mooring systems are obtained with the correlation coefficients of coupled vessel/mooring dynamics lager than 0.97. It can be concluded that the proposed method can be used as a useful tool to guide mooring line number simplification for model testing.</description><subject>Automotive Engineering</subject><subject>Classification</subject><subject>Coefficients</subject><subject>Correlation</subject><subject>Correlation coefficient</subject><subject>Correlation coefficients</subject><subject>Dynamics</subject><subject>Engineering</subject><subject>Engineering Design</subject><subject>Engineering Fluid Dynamics</subject><subject>Equivalence</subject><subject>Feasibility studies</subject><subject>Floating structures</subject><subject>Forced oscillations</subject><subject>Forces</subject><subject>Genetic algorithms</subject><subject>Lager</subject><subject>Lines</subject><subject>Mathematical models</subject><subject>Mechanical Engineering</subject><subject>Methods</subject><subject>Model testing</subject><subject>Mooring</subject><subject>Mooring lines</subject><subject>Mooring systems</subject><subject>Offshore</subject><subject>Offshore Engineering</subject><subject>Offshore structures</subject><subject>Original Article</subject><subject>Oscillations</subject><subject>Simplification</subject><subject>Sorting algorithms</subject><subject>Stiffness</subject><subject>Testing</subject><subject>Vessels</subject><issn>0948-4280</issn><issn>1437-8213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kU9r5SAUxWWYQt-89gt0FZh12uufqFmWx0w78KCLzqzFGC2WRFNNHu23r2lmmF0RFK7nd7zXg9AVhmsMIG5y2QStAbc1AOesfv2CdphRUUuC6Ve0g5bJmhEJ5-hbzs8AWDQt7FB49OM0eOeNnn0MVXTVGGPy4akafLBVWMbOpsrFVOq9HarZ5nm97XS2fVUI-7L4kx5smFf4ZHO2w80_DxOXaSi6_i3o0Zt8gc6cHrK9_Hvu0Z-fP34f7uvjw92vw-2xNlTyue5M2zFMegHQS8Kk7DUYrsFh0fVWOCY5gGwYpcIIrhnBTLe8a0RDCOsY0D36vvlOKb4spWX1HJcUypOKMGgoEYKzT1VEgMQt5qvX9aZ6KlMqH1yckzZl9baMFIN1vtRvBWZSNA1ZAbIBJsWck3VqSn7U6U1hUGtcaotLlbjUR1zqtUB0g_K0_pxN_3v5hHoHAs2YIw</recordid><startdate>20200601</startdate><enddate>20200601</enddate><creator>Liang, Mingxiao</creator><creator>Xu, Shengwen</creator><creator>Wang, Xuefeng</creator><creator>Ding, Aibing</creator><general>Springer Japan</general><general>Springer</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7TB</scope><scope>7TN</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>L.G</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0001-6611-3161</orcidid></search><sort><creationdate>20200601</creationdate><title>Simplification of mooring line number for model testing based on equivalent of vessel/mooring coupled dynamics</title><author>Liang, Mingxiao ; Xu, Shengwen ; Wang, Xuefeng ; Ding, Aibing</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c386t-bc9b412d700d82488da0c6a0f17bde7f48600854337c76a4214a96b575224b403</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Automotive Engineering</topic><topic>Classification</topic><topic>Coefficients</topic><topic>Correlation</topic><topic>Correlation coefficient</topic><topic>Correlation coefficients</topic><topic>Dynamics</topic><topic>Engineering</topic><topic>Engineering Design</topic><topic>Engineering Fluid Dynamics</topic><topic>Equivalence</topic><topic>Feasibility studies</topic><topic>Floating structures</topic><topic>Forced oscillations</topic><topic>Forces</topic><topic>Genetic algorithms</topic><topic>Lager</topic><topic>Lines</topic><topic>Mathematical models</topic><topic>Mechanical Engineering</topic><topic>Methods</topic><topic>Model testing</topic><topic>Mooring</topic><topic>Mooring lines</topic><topic>Mooring systems</topic><topic>Offshore</topic><topic>Offshore Engineering</topic><topic>Offshore structures</topic><topic>Original Article</topic><topic>Oscillations</topic><topic>Simplification</topic><topic>Sorting algorithms</topic><topic>Stiffness</topic><topic>Testing</topic><topic>Vessels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liang, Mingxiao</creatorcontrib><creatorcontrib>Xu, Shengwen</creatorcontrib><creatorcontrib>Wang, Xuefeng</creatorcontrib><creatorcontrib>Ding, Aibing</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><jtitle>Journal of marine science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liang, Mingxiao</au><au>Xu, Shengwen</au><au>Wang, Xuefeng</au><au>Ding, Aibing</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Simplification of mooring line number for model testing based on equivalent of vessel/mooring coupled dynamics</atitle><jtitle>Journal of marine science and technology</jtitle><stitle>J Mar Sci Technol</stitle><date>2020-06-01</date><risdate>2020</risdate><volume>25</volume><issue>2</issue><spage>573</spage><epage>588</epage><pages>573-588</pages><issn>0948-4280</issn><eissn>1437-8213</eissn><abstract>To decrease the complexity of experimental setup that often results in low reliability of the experimental results for typical offshore floating structures with increasingly excessive mooring lines, a mooring line number simplification methodology is proposed based on equivalent of the vessel/mooring coupled dynamics for vessel with original and simplified mooring systems. The Non-dominated Sorting Genetic Algorithms-II (NSGA-II) is adopted to achieve the static restoring forces equivalent, where the line length, axial stiffness and submerged mass of the simplified mooring system are obtained. The line diameter is then determined based on dynamic restoring forces equivalent when the mooring system is exerted by forced oscillations. Using correlation coefficients, the vessel/mooring coupled dynamics of vessel with original and simplified mooring systems are compared to determine the optimal simplified mooring system. The feasibility of the proposed methodology is demonstrated by an application for a VLFS’s mooring system comprising 20 mooring lines. Two simplified mooring systems are obtained with the correlation coefficients of coupled vessel/mooring dynamics lager than 0.97. 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| subjects | Automotive Engineering Classification Coefficients Correlation Correlation coefficient Correlation coefficients Dynamics Engineering Engineering Design Engineering Fluid Dynamics Equivalence Feasibility studies Floating structures Forced oscillations Forces Genetic algorithms Lager Lines Mathematical models Mechanical Engineering Methods Model testing Mooring Mooring lines Mooring systems Offshore Offshore Engineering Offshore structures Original Article Oscillations Simplification Sorting algorithms Stiffness Testing Vessels |
| title | Simplification of mooring line number for model testing based on equivalent of vessel/mooring coupled dynamics |
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