Truss Spar平台在船舶碰撞下的数值模拟分析

Numerical simulation analysis of Truss Spar platform under ship collision

海洋平台在海上进行工程作业时除了遭受恶劣的环境载荷外,还可能与海上船舶发生碰撞。为探究Spar平台在遭受船舶碰撞后的动力响应,本文选取1座墨西哥湾的Truss Spar平台,运用有限元分析软件Ansys/Lsdyna,建立5 000吨级补给船与Truss Spar平台的有限元模型并模拟碰撞过程,得到船舶在不同速度下与Spar平台碰撞过程中的能量转化情况和船舶撞击力时程曲线,通过对结果的分析得出一般性规律和结论,为Spar平台的设计提供理论参考依据。

In addition to adverse environmental loads,offshore platforms may also collide with ships at sea.In orde to explore the dynamic response of the Spar platform after the ship collision,this paper chooses a Truss Spar platform in the Gulf of Mexico,and uses the finite element analysis software ANSYS/LS-DYNA to establish the finite element model of the 5000ton supply ship and the Truss Spar paltform,followed by a simulated collision process.With all of these steps,we can get to know the energy conversion of the ship at different speeds with the Spar platform and the time course curve of the ship impact force.The general rule and conclusion are obtained through the analysis of the results,which provides the theoretical reference for the design of the Spar platform.