深海浮标塔架的力学响应研究  

Research on mechanical response of deep-sea buoy tower

作　　者：李家来 谢宇新[1] Li Jialai;Xie Yuxin(School of Mechanical Engineering,Tianjin University,300350,Tianjin,China)

机构地区：[1]天津大学机械工程学院,天津300350

出　　处：《应用力学学报》2020年第5期2037-2042,I0014,共7页Chinese Journal of Applied Mechanics

摘　　要：针对深海浮标在极端海况下较为常见的塔架破坏问题,结合水动力分析和有限单元法,进行了浮标塔架力学特性的三维数值模拟。选取典型的圆盘形海洋资料浮标,对其在波浪载荷下的水动力特性进行研究,分析了浮标的稳定性;利用DNV SESAM水动力软件计算了浮标横摇运动和垂荡运动的RAO曲线,根据RAO曲线模拟浮标在不同工况下的运动情况,研究塔架的受力情况;使用有限元软件ABAQUS对浮标塔架进行了模态以及强度分析,结果表明最大应力发生在塔架与浮筒的连接处。本文所得结果能够为浮标塔架的强度设计提供参考。In this paper, a three-dimensional numerical simulation of the mechanical characteristics of buoy towers is carried out by combining hydrodynamic analysis and finite element method, aiming at the common problem of tower failure of deep-sea buoys in extreme sea conditions. Firstly, a typical disc-shaped ocean data buoy is selected to study its hydrodynamic characteristics under wave load, and its stability is analyzed. Secondly, the DNV SESAM hydrodynamic software is used to calculate the RAO curves of the Buoy’s roll motion and heave motion, and then the RAO curves are used to simulate the movement of the buoy under different working conditions, so as to study the stress of the tower. Finally, the finite element software ABAQUS is used to analyze the buoy tower’s modes and strength, and the results provide a reference for the buoy tower’s strength design.

关 键 词：浮标塔架 水动力分析 RAO 有限元分析 

分 类 号：U615.35[交通运输工程—船舶及航道工程]