基于FPSO舭部优化的横摇运动及柔性立管疲劳寿命分析  

Rolling motion and fatigue life analysis of flexible riser based on bilge optimization of FPSO

作　　者：朱佳 郝淑英[1,2] 张昆鹏[1,2] 张琪昌[3] 王文龙 ZHU Jia;HAO Shuying;ZHANG Kunpeng;ZHANG Qichang;WANG Wenlong(Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control,Tianjin University of Technology,Tianjin 300384,China;National Demonstration Center for Experimental Mechanical and Electrical Engineering Education,Tianjin University of Technology,Tianjin 300384,China;Tianjin Key Laboratory of Nonlinear Dynamics and Control,Tianjin University,Tianjin 300072,China;Zhanjiang Branch of CNOOC Co,.Ltd,.Zhanjiang 524057,China)

机构地区：[1]天津理工大学天津市先进机电系统设计与控制重点实验室,天津300384 [2]天津理工大学机电工程国家级实验教学示范中心,天津300384 [3]天津大学天津市非线性动力学与控制重点实验室,天津300072 [4]中海石油(中国)有限公司湛江分公司,广东湛江524057

出　　处：《天津理工大学学报》2022年第5期1-5,共5页Journal of Tianjin University of Technology

基　　金：国家自然科学基金资助项目(12072234,11872044)。

摘　　要：FPSO舭部优化不但可抑制横摇运动响应,同时对非黏结性柔性立管上端的疲劳寿命产生影响。针对某10 wt级FPSO深水柔性立管系统,建立了柔性立管的整体和局部分析模型。通过优化FPSO舭部结构增加船体横摇阻尼,计算不同来浪角度下船体的横摇运动响应并进行对比分析。在此基础上,研究FPSO舭部优化对柔性立管疲劳寿命的影响。结果表明:对10 wt级FPSO的舭部进行优化,可使船体在90°横浪下的横摇角度减少约15%,且来浪角度接近船艏时也有较好的减摇效果。柔性立管的疲劳寿命主要由内抗拉铠装层的损伤情况确定,舭部优化后立管上端的疲劳寿命可提升约3.51%。FPSO bilge optimization can not only restrain the rolling motion response,but also affect the fatigue life of the upper end of the unbonded flexible riser.The global and local analysis models of the flexible riser are established for a ten wt FPSO deep-water flexible riser system.When the rolling damping of the ship is increased by optimizing the FPSO bilge structure,the rolling motion responses of the ship under different wave angles are calculated and compared.On this basis,the effect of bilge optimization of the FPSO on the fatigue life of the flexible riser is studied.The results show that the optimization of the FPSO bilge structure can reduce the rolling angle of the hull about 15%under 90°transverse waves,and has a better anti-rolling effect when the incoming wave angle is close to the bow.The fatigue life of the flexible riser is mainly determined by the damage of the internal tensile armor layer,and the fatigue life of the upper end of the riser can be increased by about 3.51%after bilge optimization.

关 键 词：舭部优化 横摇运动 柔性立管 疲劳寿命 

分 类 号：TE973[石油与天然气工程—石油机械设备]