海南大学学报（自然科学版中英文）2026，Vol.44Issue(1)：1-13,13.DOI:10.65658/j.hndk.2025042801
基于有限元方法的柔性立管接头疲劳性能分析
Fatigue performance evaluation of flexible riser joints using finite element method
摘要
Abstract
Addressing the challenges of long-term reliance on imported products and the underdeveloped fatigue life evaluation system for flexible riser connectors in deepwater resource development,this study investigates a bonded flexible riser-floating platform system at a water depth of 1 200 m.A design and evaluation methodology for connectors based on multibody coupled dynamics and fatigue damage evolution mechanism is proposed.First,a coupled dynamic model of the platform and pipeline was established using OrcaFlex to extract time-history data for effective tension and bending moment at the pipe-end interface.Then,parametric finite element models of two connector types-hybrid and crimped-were developed,and their stress responses and fatigue damage were accurately simulated on the ANSYS platform.Finally,a fatigue life evaluation system accounting for multiaxial stress states was established by integrating the rainflow counting method with S-N curve theory.The results demonstrate that,compared to the crimped connector,the hybrid connector exhibits a 30%lower maximum stress level and a more uniform stress distribution,indicating superior structural synergy and fatigue resistance.关键词
柔性立管/ANSYS/接头/疲劳寿命/S-N曲线Key words
flexible riser/ANSYS/pipe joint/fatigue life/S-N curve分类
能源科技引用本文复制引用
魏忠宁,沈义俊,唐耿..基于有限元方法的柔性立管接头疲劳性能分析[J].海南大学学报（自然科学版中英文）,2026,44(1):1-13,13.基金项目
本文得到以下基金项目支持:国家自然科学基金项目(52231012) （52231012）
海南省重大科技计划项目(ZDKJ2021027). This article was supported by the following funding projects:National Natural Science Foundation of China(52231012) （ZDKJ2021027）
Hainan Major Science and Technology Program(ZDKJ2021027). （ZDKJ2021027）
