考虑多场耦合的碰撞载荷下半潜式风机动力响应

以DeepCwind浮式风机为研究对象，确定典型碰撞事故场景，提出一种风-浪-系泊耦合场景下船舶-浮式风机碰撞动态响应数值分析方法。基于FAST程序获得不同海况下半潜式风机的气动推力、水动力参数和系泊张力，再利用LS-DYNA中的Subroutine Loadud子程序完成加载以实时更新计算水动力载荷，同时考虑系泊载荷和气动载荷的耦合作用。在此基础上，基于LS-DYNA软件开展多场耦合的碰撞载荷作用下浮式风机动力响应研究，分析船舶撞击对浮式风机动力响应的影响。结果显示：撞击船的动能大部分转化为浮式风机的动能，风机浮筒所产生的应力应变主要分布于浮筒的撞击区域，且浮筒的结构应力呈现先增大后减小的趋势。

Dynamic Response of Semi-Submersible Wind Turbine Under Collision Loads Considering Multi-Field Coupling

Taken DeepCwind floating wind turbine as the research object, the typical collision accident scenarios are determined, and a numerical analysis method is proposed for dynamic response of ship-floating wind turbine collision under wind-wave-mooring coupling scenario. Based on the FAST program, the aerodynamic thrust, hydrodynamic parameters and mooring tension of the semi-submersible floating wind turbine under different sea conditions are obtained, and Subroutine Loadud subroutine in LS-DYNA is used to complete the load to update and calculate the hydrodynamic load in real time, at the same time, the coupling of the aerodynamic load and mooring load is considered. On this basis, the dynamic response of the floating wind turbine under multi-field coupled impact load is studied based on LS-DYNA software, and the influence of ship impact on the dynamic response of floating wind turbine is analyzed. The results show that most of the kinetic energy of the colliding ship is converted into the kinetic energy of the floating wind turbine, the stress strain generated by the wind turbine buoy is mainly distributed in the impact area of the buoy, and the structural stress of the buoy increases first and then decreases.