Innovative approach to design truncated mooring system based on static and damping equivalent

Innovative approach to design truncated mooring system based on static and damping equivalent
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基于静态和阻尼当量的截断系泊系统设计创新方法

DOI:
10.1080/17445302.2013.867631
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发表时间:
2014-11
影响因子:
2.1
通讯作者:
Ou, Jinping
Ou, Jinping
中科院分区:
工程技术4区
文献类型:
--
作者:
Fan, Tianhui;Qiao, Dongsheng;Ou, Jinping

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提出了一种新的混合模型试验等效截断系泊系统设计方法。考虑重力、张力、海流力和系缆伸长等因素,采用分段外推法对多分量系缆进行静力分析。此外,还采用准静态方法和耗散能模型计算了系泊系统的系泊阻尼。基于静力和阻尼特性的相似性,采用遗传算法开发了等效截断系泊系统的优化设计程序。针对某1500 m水深半潜式平台采用的悬链线系泊系统、半张紧系泊系统和张紧系泊系统,分别采用本文设计程序进行等效截断系泊系统设计。计算结果表明,该设计程序适用于各种常用的深水系泊系统,可用于混合模型试验。
An innovative approach is developed to design equivalent truncated mooring system for hybrid model testing. Considering the gravity, tension, current force and mooring line extension, the piecewise extrapolating method is employed to the static analysis of the multi-component mooring line. In addition, the quasi-static approach and dissipated energy model are used to figure out the mooring-induced damping of mooring system. Employing genetic algorithm, an optimised design program is developed to design equivalent truncated mooring system based on the similarity of both static and damping characteristics. Considering the catenary, semi-taut and taut mooring systems used for some semi-submersible platform of 1500 m water depths, equivalent truncated mooring system is designed by using the design program in this paper, respectively. The results prove that the design program is available for all common types of deep water mooring system and can be used for hybrid model testing.
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