海上风力机防护装置布孔方式及性能研究  

A study of the hole setting methods and performance of offshore wind turbine protection devices

作　　者：王瑀琎 赵鑫磊 岳新智 李春[1,2] 岳敏楠 WANG Yujin;ZHAO Xinlei;YUE Xinzhi;LI Chun;YUE Minnan(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,Shanghai 200093,China)

机构地区：[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200093

出　　处：《振动与冲击》2023年第24期249-256,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(51976131,52006148,52106262);上海市Ⅳ类高峰学科-能源科学与技术-上海非碳基能源转换与利用研究院建设项目。

摘　　要：海上风力机存在受船舶碰撞的风险隐患,一旦发生将导致风力机损伤甚至倒塌事故,造成严重经济损失,因此有必要对其进行防护设计以提高安全性。为此采用显示动力分析软件LS-DYNA,通过对防护装置设置通孔,研究孔数及相对角度对防护性能的影响。结果表明:设孔防护装置可延长船舶与风力机接触时间,强化能量转化效果,降低船舶回弹能量;三孔防护装置吸能效果最优,单孔与双孔结构设孔角度分别取50°,60°范围内,其吸能效果均优于无孔防护装置;在船艏撞击范围内设孔,可为橡胶材料提供额外变形空间,增强防护装置抗撞能力;多孔防护装置孔间材料承担主要变形吸能作用,合适的孔间距有助于提高防护性能;孔间距较小的防护装置能吸收较多能量,但易导致材料压溃失效。Offshore wind turbines are at risk of collision with ships,which will cause wind turbines to be damaged or even collapse,causing serious economic losses.Therefore,it is necessary to propose protective design to improve the safety.To this end,the explicit dynamic analysis software LS-DYNA was utilized to study the influence of the number and the angle of the holes on the protection performance by setting via holes for the protection device.The simulation is based on the collision between a 5000 tons ship and a 4 MW wind turbine equipped by protective device which has one hole or multiple holes with different relative angles.Results show that:the perforated protection device can prolong the contact time between the ship and the offshore wind turbine and enhance the energy conversion effect and consequently reduce the rebound energy of the ship.The energy absorption effect of the three-hole protection device is the best,the energy absorption effect of the single-hole and double-hole structure is better than that of the non-hole protection device when the hole angle is 50°and 60°,respectively.The hole in the collision range of the bow can provide additional deformation space for the rubber material and improve the anti-collision ability of the protection device.The material between the holes of the porous protective device is responsible for the main deformation and energy absorption,and appropriate hole spacing helps to improve the protective performance.The protective device with smaller hole spacing can absorb more energy,but it is easy to cause the material to fail.

关 键 词：海上风力机 设孔结构 防护设计 防护性能 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]