上海交通大学学报

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (10): 1652-1657.

• 天文学、地球科学 • 上一篇    下一篇

全耦合深海平台系统中液压张紧器的数值模拟  

王坤鹏，薛鸿祥，唐文勇   

  1. (上海交通大学，海洋工程国家重点实验室，上海 200240）
  • 收稿日期:2012-02-28 出版日期:2012-10-30 发布日期:2012-10-30
  • 基金资助:

    国家自然科学基金项目（51009089）资助；高等学校博士学科点专项科研基金课题（20100073120017）资助

Numerical Simulation of Hydropneumatic Tensioner for Coupled Deepwater Platform System

 WANG  Kun-Peng, XUE  Hong-Xiang, TANG  Wen-Yong   

  1. (State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2012-02-28 Online:2012-10-30 Published:2012-10-30

摘要： 基于利用ABAQUS开发的平台/系泊索/立管全耦合分析程序，研究应用于深海平台系统与顶端张紧式立管连接的液压张紧器的数值模型.对数值模拟液压张紧器中的刚度非线性效应、摩擦效应以及平台、张紧器和顶端张紧式立管的耦合连接方式进行了研究，提出了非线性液压张紧器模型.通过张紧器线性和非线性模型结果的比较，得到了非线性效应对立管和平台响应的影响，对提高顶端张紧式立管极限强度和疲劳寿命的预报精度有一定的帮助作用.    

关键词: 全耦合模型, 液压张紧器, 冲程, 刚度非线性, 摩擦效应

Abstract: The hydropneumatic tensioner used for the connection of deepwater platform and top tension risers (TTRs) was studied based on the hull/mooring/riser coupled analysis program developed in ABAQUS. The present study focused on the challenges for the tensioner numerical simulation, and proposed a nonlinear tensioner model considering the nonlinear stiffness, friction and the connection of platform, tensioner and TTR. The tensioner is simplified as a linear model, and the predicted responses are compared with that of nonlinear model, from which the effect of nonlinearity on the risers and platform is obtained, which would contribute to more accurate predicted ultimate strength and fatigue life.

Key words: full coupled model, hydropneumatic tensioner, strokes, nonlinear stiffness, friction effect

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