为避免船舶-风力机碰撞造成巨大损失,提升海上风力机防护装置抗撞性能,将笛卡尔分形结构应用于橡胶及泡沫铝材料设计防护装置,基于非线性动力学理论,采用ANSYS/LS-DYNA模拟5000 t船舶碰撞安装分形结构橡胶、泡沫铝防护装置4 MW单立柱三桩海上风力机基础过程,对比分析研究不同材料防护装置采用分形结构后防护性能优劣。结果表明：较橡胶材料,泡沫铝防护装置吸能效果更好,显著提升防护装置能量耗散能力;分形结构作用于不同材料具有不同表现,应用于泡沫铝材料降低接触力效果更显著,而应用于橡胶在提升耗能、降低塔顶响应方面表现更佳。
Abstract
In order to prevent massive losses caused by collisions between ships and wind turbines, as well as to improve the anti-collision performance of offshore wind turbine protective devices, Cartesian fractal structure was applied to rubber and aluminum foam to design protective devices based on nonlinear dynamics theory. ANSYS/LS-DYNA was used to simulate the installation process of 4 MW single-column three-pile offshore wind turbine foundation with fractal structure rubber and aluminum foam protective devices in 5000 t ship collision. The protective performance of different material protective devices with fractal structure was compared and analyzed. The results show that compared with the rubber material, the aluminum foam protective device has better energy absorption effect and significantly improves the energy dissipation ability of the protective device. The fractal structure has different effects on different materials, and the effect of reducing contact force is more significant when applied to aluminum foam, and the performance of improving energy consumption and reducing the response of tower top is better when applied to rubber.
关键词
海上风电 /
风力机 /
分形 /
碰撞 /
橡胶 /
泡沫铝 /
防护装置
Key words
offshore wind power /
wind turbines /
fractals /
collision /
rubber /
aluminum foam /
protective device
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基金
国家自然科学基金（51976131; 52006148; 52106262）; 上海市“科技创新行动计划”地方院校能力建设项目（19060502200）
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