单点悬挂式结构物水动力性能和结构强度分析

Hydrodynamic Performance and Structural Strength Analysis of Single-Point Suspension Structures

以某单点悬挂式海洋结构物为例,采用数值方法对其水动力性能和结构强度进行分析。建立结构物水动力模型和结构有限元模型,创建附加刚度矩阵模拟悬挂点的约束作用,采用三维频域势流理论和Morison理论计算结构物的水动力性能和波浪载荷。考虑结构物自身重力、浮力、波浪力、惯性力和悬挂点约束力等载荷的作用,采用有限元法分析其结构强度,为悬挂式结构物的设计和计算校核提供参考。

Taking a single-point suspension marine structure as the example,the hydrodynamic performance and structural strength are analyzed with numerical methods.The hydrodynamic model and structural finite element model are established,and an additional stiffness matrix is created to simulate the suspension point constraint.The three-dimensional frequency domain potential flow theory and Morison theory are used to calculate the hydrodynamic performance and the wave loads of the structure.Considering effects of the gravity and buoyancy of the structure,the wave forces,the inertial forces and the suspension point binding force,the finite element method is used to analyze the structural strength,which provides reference for the design and calculation of the suspension structures.