一种新型附加稳定链锚泊系统的静动力特性分析  

Analysis of static and dynamic characteristics of a novel type of mooring system with stable chain

作　　者：张宸鑫 李效民[1] ZHANG Chen-xin;LI Xiao-min(College of Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266100

出　　处：《船舶力学》2022年第7期1064-1076,共13页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51979257);山东省自然科学基金资助项目(ZR2019MEE032,ZR2020ME261);山东省海洋工程重点实验室开放基金课题(kloe202002)。

摘　　要：本文提出了一种附加稳定链的新型锚泊系统,基于向量式有限元法建立其动力学分析模型,并与传统锚泊系统特性进行对比。向量式有限元法建模机理是将系泊缆索离散为有限数量质点集合,采用空间杆单元模拟质点间的运动,不需要集成刚度矩阵和迭代求解控制方程,为复杂结构行为分析带来方便。采用稳定链替代重块在锚泊系统上的作用,对比不同长度、质量稳定链对锚泊系统特性的影响,在此基础上对传统张紧式、附加重块、附加稳定链三种模型的形态、张力值和松弛—张紧状况进行深入研究。结果表明:向量式有限元法与传统建模方法在位型确定和张力分析方面吻合度极高;稳定链可以减缓拉力提升角度和垂向锚固力,起到降低顶部张力并限制海床接触风险的作用,一定程度延长了整体系统的运行寿命,提高了经济效益。Based on the vector form intrinsic finite element(VFIFE) method, a novel type of mooring system with stable chain was established, and its static and dynamic characteristics were compared with the traditional mooring system. The VFIFE method discretizes the mooring system into a finite number of particle sets,and the mutual motion of the particles were simulated by using the space bar element, which brings convenience for the behavior analysis of complex structures. The influence of the stable chain on the mooring system characteristic was analyzed, and compared with the characteristic of the traditional tensioned mooring system, mooring system with weights and mooring system with stable chain. The results show that VFIFE matches well with other modeling methods in aspect of shape determination and tension analysis,and the stable chain can greatly reduce the top tension and limit the risk of seabed contact effect, improving the operating life of anchorage system and effective cost.

关 键 词：向量式有限元 张紧式锚泊系统 重块 稳定链 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]