Research on the Viscoelasticity of Polyester Mooring Lines Using the Absolute Nodal Coordinate Formulation  

基于绝对节点坐标法的聚酯系泊缆粘弹性研究

作　　者：Da Li Haibo Sui Zhuang Kang Liping Sun 李达;隋海波;康庄;孙丽萍(Engineering R&D Dept.,CNOOC Research Institute Co.,Ltd.,Beijing 100028,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]Engineering R&D Dept.,CNOOC Research Institute Co.,Ltd.,Beijing 100028,China [2]College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China

出　　处：《Journal of Marine Science and Application》2022年第2期16-23,共8页船舶与海洋工程学报（英文版）

基　　金：Supported by the Specialized Research Project for LS17-2 Semi-submersible Production Platform(LSZX-2020-HN-05-0405).

摘　　要：The taut mooring system using synthetic fiber ropes has overcome the shortcomings such as the large self-weight of the mooring lines and provides better mooring performance for the floating structures.The polyester rope has attracted much attention among numerous synthetic fiber rope materials due to its lightweight,low price,corrosion resistance,and high strength.Thus,the mooring characteristics of it are worth studying.Polyester mooring lines are flexible in deep water,when a marine structure is moored by them,the geometric nonlinearity such as large displacement,large stretch,and large bending deformation,and the material nonlinearity like viscoelastic of the polyester ropes become complex integrated problems to be studied.Considering the nonlinear phenomenon,the simulation and calculation of a polyester line were carried out by the absolute nodal coordinate formulation(ANCF)in this paper since the ANCF method has advantages in dealing with the significant deformation problems of the flexible structures.In addition,a chain mooring line was also simulated for comparison,and the results show that the polyester ropes reduce the self-weight of the mooring lines and provide sufficient mooring strength at the same time,and the nonlinear phenomenon of the polyester ropes is different from that of the chain mooring lines.

关 键 词：Taut mooring Polyester rope Absolute nodal coordinate formulation VISCOELASTICITY Chain mooring line Geometric nonlinearity Material nonlinearity 

分 类 号：U674.38[交通运输工程—船舶及航道工程]