摘要
面向大型自升式风电安装船的可靠稳定升降需求,设计一种具备万吨载荷能力的桁架式升降桩腿,并进行了齿轮-弦杆-桁架耦合系统的仿真校核分析。进行桁架式升降桩腿的机械结构总体设计与三维建模,并确定关键部件的结构参数,包括齿轮、弦杆(含齿条)、桁架等。开展设计桩腿强度与模态的有限元分析,包括万吨重力载荷条件下的齿轮齿条静力分析、万吨重力载荷条件下的桩腿静力分析、万吨重力载荷与12级飓风耦合作用下桩腿静力分析、桩腿在完全下沉状态下的模态、桩腿在完全提升状态下的模态。耦合系统仿真结果表明,上述工况下设计桩腿系统的最大应力小于材料的屈服应力,可以安全稳定运行。桩腿系统在完全下沉与完全抬升情况下的1阶模态频率均大于0.85 Hz,对低频扰动具有很好的抵抗能力。提出的桩腿设计参数及仿真结果,可以为风电安装船的设计与控制提供理论与数据支撑。
In order to meet the requirements of reliable and stable lifting of large jack-up wind power installation ship,a truss type lifting pile leg with a load capacity of 10000 tons is designed,and the load capacity of the gear-chord-truss coupling system is simulated.First,the overall design and 3D modeling of the mechanical structure of the truss type lifting pile leg are carried out,and the structural parameters of the key components,including gear,chord(including rack)and truss,are determined.Then,the finite element analysis of the strength and modes of the leg is carried out,including the static analysis of the gear and rack under 10000 tons of gravity load,the static analysis of the pile leg under 10000 tons of gravity load,the static analysis of the pile leg under the coupling of 10000 tons of gravity load and a category 12 hurricane,the mode of the pile leg under the full sinking state and the full lifting state.The simulation results of the coupled system show that the maximum stress of the pile leg is less than the yield stress of the material,and it can run safely and stably.The first-order modal frequency of the pile leg system is greater than 0.85 Hz under the conditions of full sinking and full lifting,and it has good resistance to low frequency disturbances.The design parameters and simulation results of the pile leg presented can provide theoretical and data support for the design and control of wind power installation ships.
作者
傅道成
杨旭
万家平
宋志国
杜言锋
何永慧
FU Daocheng;YANG Xu;WAN Jiaping;SONG Zhiguo;DU Yanfeng;HE Yonghui(Institute of Marine Science and Technology,Shandong University,Qingdao 266237,Shandong,China;COSCO Shipping(Qidong)Offshore Co.,Ltd.,Nantong 226259,Jiangsu,China;COSCO Shipping Shipyard(Nantong)Co.,Ltd.,Nantong 226006,Jiangsu,China;Shanghai Marine Diesel Engine Research Institute,Shanghai 200090,China)
出处
《船舶工程》
CSCD
北大核心
2024年第S02期167-173,196,共8页
Ship Engineering
基金
江苏省海洋科技创新项目(JSZRHYKJ202215)
国家自然科学基金项目(52175018)。
关键词
桁架式升降桩腿
机械结构
设计
建模
有限元分析
truss type lifting pile leg
mechanical structure
design
modeling
finite element analysis