摘要
深海浮式平台与其系泊系统的耦合作用显著,在数值分析中,需要合理确定二者耦合边界的模拟方法。本文以深水半潜式钻井平台及其系泊系统为研究对象,将浮体与系泊之间复杂的连接边界简化为固接、铰接和弹簧连接三种边界约束模型,提出了弹簧连接中相关参数的确定方法,并将不同边界约束下系缆张力的计算结果与模型试验数据进行对比验证。通过算例分析,探讨不同边界约束对平台运动、系缆张力及其疲劳损伤的影响,给出设计分析的选择建议。
The coupling effect between a floating platform and its mooring system is remarkable in deep water.In the numerical analysis,the simulation methods of the coupling boundary need to be determined reasonably.This paper investigates the coupling effect between a semi-submersible drilling platform and its mooring system in deep water,and simplifies the complex connection boundary to fixed,hinge and spring connections.The selection method of related parameters in the spring connecting is proposed.The numerical results of mooring line tension under different boundary constraints are validated by experimental data,and by the analysis of numerical examples,the influences of different boundary constraints on platform motion,mooring line tension and fatigue damage are discussed.The choice suggestions of boundary constraints in numerical simulations are recommended.
作者
范星宇
杜君峰
刘勇
FAN Xing-Yu;DU Jun-Feng;LIU Yong(College of Engineering,Ocean University of China,Qingdao 266100,China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第12期121-128,共8页
Periodical of Ocean University of China
基金
国家自然科学基金项目(51490675
51709247)
中央高校基本科研业务费专项(201713035)
中国海洋大学山东省海洋工程重点实验室开放基金资助~~
关键词
半潜式平台
系泊系统
边界连接
时域耦合分析
疲劳损伤
semi-submersible platform
mooring system
boundary connection
time domain coupling analysis
fatigue damage
