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| Numerical simulation of monopile foundation for offshore wind turbine subject to ship impact |
| HAO Er-tong1 ,LIU Chun-guang1 , LIU Yingzhou2 |
| Institute of Engineering Earthquake, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China |
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Abstract There is no relevant specification and damage assessment criterion of offshore wind turbine subject to ship impact in our country now, taking a domestic offshore wind turbine with monopile foundation as example, the process of an offshore wind turbine stricken by a ship were analyzed by using LS-DYNA from the perspective of energy variation, the maximum collision-force and response of offshore wind turbine, and damage rate of area assessing extent of damage for offshore wind turbine was proposed. Results show that the maximum collision-force increased linearly with increasing one third power of quality, velocity and sine of collision angle of ship if initial kinetic energy of ship respectively is no more than about 35 MJ, 35 MJ, 25 MJ, but the linear relationship is not obvious when exceeding, and damage rate of area can reasonably reflect the damaged area and area size of monopile foundation.
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Received: 11 December 2013
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2015, Vol. 34 
