摘要
目前国内没有海上风机受船舶撞击的相关规范和损伤评估标准,以国内某单桩基础海上风机为例,运用LS-DYNA软件从能量变化、最大撞击力和风机响应角度对风机受船舶撞击过程进了分析,并提出面积受损率来评估风机受损程度。分析结果显示:船舶初始动能在分别不超过约35MJ、35MJ、25 MJ时,最大撞击力与船舶质量的1/3次方、速度、撞击角度的正弦值成线性关系,超过时线性关系不再明显;面积受损率能合理反映单桩基础的受损区域和受损面积。
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.
关键词
海上风机 /
单桩基础 /
撞击力 /
面积受损率 /
数值仿真
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Key words
offshore wind turbine /
monopile foundation /
collision-force /
damage rate of area /
numerical simulation
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郝二通;柳春光;柳英洲.
海上风机单桩基础受船舶撞击的数值研究[J]. 振动与冲击, 2015, 34(3): 7-13
HAO Er-tong;LIU Chun-guang;LIU Yingzhou.
Numerical simulation of monopile foundation for offshore wind turbine subject to ship impact[J]. Journal of Vibration and Shock, 2015, 34(3): 7-13
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脚注
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