基于ABAQUS的SCR立管的动力分析

Dynamic Analysis of SCR Riser Based on ABAQUS

文中对SCR立管的模型与分析方法进行了总结,推导了悬链线的方程,并对SCR立管静态与动态进行了ABAQUS有限元分析,选择的计算方法为子空间迭代法,分析了立管各阶振动模态与频率。另外,还分析了立管微元的受力情况,并研究了不同顶部张紧力增大时的固有频率,发现固有频率有所增大。

In this paper,model and analysis methods of SCR riser were summarized,the catenary equation was derived,and the static and dynamic finite element of ABAQUS was analyzed,calculation method for subspace iteration method was selected,the vibration modes and frequency of the riser were analyzed. In addition,this paper also analyzed the force condition of the opposite tube microelement,and studied the natural frequency of different top tension force,and found that the natural frequency has increased.