ABSTRACT
With the increasing number of offshore wind farms, the probability of wind turbines hit by large sea-going ships or operation/maintenance vessels increase greatly. This study describes the numerical investigation on the dynamic response damage of floating wind turbines when struck by a 3500t bulk carrier. Based on the finite element simulation, the dynamic response characteristics of a spar-type concrete floater carrying National Renewable Energy Laboratory (NREL) 5MW wind turbines under ship collision are studied in a commercial software, LS-DYNA. The results show that when a ship hits the floating wind turbine, there are multiple peaks in the crushing force. The impact velocity has a great influence on the maximum displacement at the tower top. Moreover, the vibration of the tower causes the alternating tensile and compressive stress. The deformation of ship bow is affected seriously by the impact velocity.
