| 引用本文: | 王瑀琎,岳新智,刘坤鹏,李春,岳敏楠.一种分形王莲叶脉仿生的海上风力机防护装置[J].哈尔滨工业大学学报,2024,56(12):124.DOI:10.11918/202306066 |
| WANG Yujin,YUE Xinzhi,LIU Kunpeng,LI Chun,YUE Minnan.A fractal victoria vein-inspired protective device for offshore wind turbine[J].Journal of Harbin Institute of Technology,2024,56(12):124.DOI:10.11918/202306066 |
|
| |
|
|
| 本文已被：浏览 58次 下载 60次 |
码上扫一扫！ |
|
|
| 一种分形王莲叶脉仿生的海上风力机防护装置 |
|
王瑀琎1,岳新智1,刘坤鹏1,李春1,2,岳敏楠1
|
|
(1.上海理工大学 能源与动力工程学院,上海 200093; 2.上海市动力工程多相流动与传热重点实验室(上海理工大学),上海 200093)
|
|
| 摘要: |
| 海上航线日益密集,海上风力机面临船舶碰撞风险,为提高海上风力机抗撞性能,维护其安全稳定运行,延长其服役时间,提出了一种新型分形的王莲叶脉仿生结构的海上风力机防护装置,通过LS-DYNA利用非线性有限元模型模拟海上风力机基础与2 m/s船舶碰撞过程,对仿生分形防护装置和普通传统防护装置进行防护性能的分析与对比,包括系统接触力、塔架应力情况、立柱与基础连接高应力区应力情况和能量转化等方面。模拟结果表明:与普通防护装置相比,仿生叶脉结构可降低风力机受到的最大接触力,并使接触区域高应力区域范围更小,整体应力也明显降低。此外,仿生叶脉结构还可以提升防护装置对立柱与基础连接处的防护能力,减小连接处的最大应力,并明显降低平均应力；相较于普通防护装置,仿生分形结构主体防护材料吸收动能更多,但其内能升高较小,吸收的能量耗散量更大,同时也使得钢壳吸能效果显著提升,因此,与传统普通防护装置相比,仿生分形结构防护装置综合抗撞性能更佳。 |
| 关键词: 海上风力机 分形 仿生 碰撞 船舶 防护性能 |
| DOI：10.11918/202306066 |
| 分类号:TK83 |
| 文献标识码:A |
| 基金项目:国家自然科学基金 (1,8, 52106262) |
|
| A fractal victoria vein-inspired protective device for offshore wind turbine |
|
WANG Yujin1,YUE Xinzhi 1,LIU Kunpeng1,LI Chun1,2,YUE Minnan1
|
|
(1.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; 2.Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering (University of Shanghai for Science and Technology), Shanghai 200093, China)
|
| Abstract: |
| With the increasing density of maritime traffic, offshore wind turbines face the risk of collisions with vessels. To enhance the collision resistance performance of offshore wind turbines and maintain their safe and stable operation, as well as extend their service life, a novel biomimetic fractal-based protective device inspired by the lotus leaf vein structure is proposed for offshore wind turbines. Using LS-DYNA, a nonlinear finite element model is employed to simulate the collision process between the offshore wind turbine foundation and a vessel traveling at 2 m/s. The protective performance of the biomimetic fractal protective device is analyzed and compared with a conventional traditional protective device, including the system contact force, tower stress, stress in the high-stress zone of the column and foundation connection, and energy conversion. The simulation results show that compared to conventional protective devices, the biomimetic leaf vein structure can reduce the maximum contact force applied to the wind turbine, resulting in a smaller high-stress region in the contact area and a significant overall reduction in stress. Additionally, the biomimetic leaf vein structure enhances the protective capabilities of the device at the connection between the column and the foundation, reducing the maximum stress at the connection and significantly lowering the average stress. Compared to ordinary protective devices, the main protective material of the biomimetic fractal structure absorbs more kinetic energy while experiencing a smaller increase in internal energy, leading to greater energy dissipation and significantly improved energy absorption efficiency of the steel shell. Overall, the biomimetic fractal structure protective device demonstrates superior comprehensive collision resistance performance compared to traditional conventional protective devices. |
| Key words: offshore wind turbine fractal biomimicry collision ship protective performance |
|
|
|
|
