中文摘要：

为了研究船舶与海上风电站发生碰撞时海上风电站的损伤特性及其抗撞性能,利用非线性有限元动态响应分析程序MSC.Dytran模拟了一艘5000t船舶以不同速度侧向撞击目标风电站的动态过程.在仿真计算中,将船体作为刚性材料处理,风电站作为弹塑性材料处理,周围的水对船体的作用采用附连水质量法处理.通过仿真计算,得到了风电站的结构损伤特性、碰撞力撞深曲线、能量转化曲线及其它相关数据.计算结果表明,风机的破坏主要表现为整体结构的屈曲和局部构件的断裂,撞击船初速度对风电结构的吸能撞深曲线影响不大,碰撞力撞深曲线呈现出强的非线性特征.

英文摘要：

In order to study the damage and anti-impact characteristics of offshore wind turbines,the dynamic processes of an offshore wind turbine stricken by a ship of 5000t displacement in the lateral direction at different initial velocities were simulated by using MSC.Dytran,a nonlinear finite element code for dynamic response analysis.During the simulation process,material of the ship hull was assumed as rigid and wind turbines as elasto-plastic.Water influence around the ship hull was simulated by added water mass method.Structural damage characteristics of offshore wind turbine,curves of collision force vs.penetration,curves of energy transformation and other relevant data were,respectively,obtained by simulated computation.The calculation results show that overall buckling and fracture of the local structure are the major damage types of offshore wind turbines.The impact velocity has a little effect on the curves of energy vs.penetration,and the curves of collision force vs.penetration present non-linear character.