| 系泊系统非线性恢复力研究及其应用(英文) |
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| 引用本文： | 张健,任慧龙,张立杰.系泊系统非线性恢复力研究及其应用(英文)[J].船舶与海洋工程学报,2012,11(1):74-82. |
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| 作者姓名： | 张健 任慧龙 张立杰 |
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| 作者单位： | College of Shipbuilding Engineering,Harbin Engineering University;Tianjin Centrans Shipping Management Co.,Ltd. |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No.51079034 |
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| 摘 要： | Mooring system plays an important role in station keeping of floating offshore structures.Coupled analysis on mooring-buoy interactions has been increasingly studied in recent years.At present,chains and wire ropes are widely used in offshore engineering practice.On the basis of mooring line statics,an explicit formulation of single mooring chain/wire rope stiffness coefficients and mooring stiffness matrix of the mooring system were derived in this article,taking into account the horizontal restoring force,vertical restoring force and their coupling terms.The nonlinearity of mooring stiffness was analyzed,and the influences of various parameters,such as material,displacement,pre-tension and water depth,were investigated.Finally some application cases of the mooring stiffness in hydrodynamic calculation were presented.Data shows that this kind of stiffness can reckon in linear and nonlinear forces of mooring system.Also,the stiffness can be used in hydrodynamic analysis to get the eigenfrequency of slow drift motions.
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| 关 键 词： | coupled analysis nonlinear restoring force mooring system lower frequency drift motion |
A nonlinear restoring effect study of mooring system and its application |
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| Jian Zhang,Huilong Ren,Lijie Zhang.A nonlinear restoring effect study of mooring system and its application[J].Journal of Marine Science and Application,2012,11(1):74-82. |
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| Authors: | Jian Zhang Huilong Ren Lijie Zhang |
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| Institution: | 1.College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China 2.Tianjin Centrans Shipping Management Co.,Ltd.,Tianjin 300000,China |
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| Abstract: | Mooring system plays an important role in station keeping of floating offshore structures. Coupled analysis on mooring-buoy
interactions has been increasingly studied in recent years. At present, chains and wire ropes are widely used in offshore
engineering practice. On the basis of mooring line statics, an explicit formulation of single mooring chain/wire rope stiffness
coefficients and mooring stiffness matrix of the mooring system were derived in this article, taking into account the horizontal
restoring force, vertical restoring force and their coupling terms. The nonlinearity of mooring stiffness was analyzed, and
the influences of various parameters, such as material, displacement, pre-tension and water depth, were investigated. Finally
some application cases of the mooring stiffness in hydrodynamic calculation were presented. Data shows that this kind of stiffness
can reckon in linear and nonlinear forces of mooring system. Also, the stiffness can be used in hydrodynamic analysis to get
the eigenfrequency of slow drift motions. |
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| Keywords: | coupled analysis nonlinear restoring force mooring system lower frequency drift motion |
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