【摘要】 为探究典型工况下大型半潜式风机耦合运动响应变化规律，以15 MW半潜式风机为研究对象，针对正常运行工况与极端停机工况，采用势流理论及多体动力学等方法分析风浪夹角与二阶水动力对于半潜式风机耦合运动响应的影响，揭示不同运动状态下浮式平台、塔筒、系泊系统的耦合机理。结果表明:风浪夹角增大时纵荡、纵摇运动及塔基弯矩响应极值普遍减小、均值增大，垂荡运动和系泊张力受浪向影响较小。同时，二阶波浪力对机组动力响应影响显著，极端停机工况下，二阶差频力导致平台纵荡和纵摇运动均值增大，并引起塔架大幅振动、系泊张力增加。更多还原

【Abstract】 To investigate the variation rules of the coupled motion response of large semi-submersible wind turbines under typical working conditions,a 15 MW semi-submersible wind turbine was taken as the research object. Focusing on normal operating conditions and extreme shutdown conditions,methods such as potential flow theory and multi-body dynamics were employed to analyze the influence of wind-wave angles and second-order hydrodynamic forces on the motion response of wind turbines,and to reveal the coupling mechanisms among the floating platform,tower,and mooring system under different motion states. The results indicate that when the wind-wave angle increases,the extreme values of surge,pitch motions,and tower base bending moment responses generally decrease while the mean values increase.The heave motion and mooring tension are less affected by the wave direction. Meanwhile,second-order wave forces have a remarkable influence on the dynamic response of the wind turbine. Under extreme shutdown conditions,the second-order difference frequency forces lead to an increase in the mean values of surge and pitch motions of the platform,leading to large vibrations of the tower and an increase in mooring tension.更多还原