钢悬链立管的敏感性分析与疲劳寿命预估  

Sensitivity Analysis and Fatigue Life Prediction of SCR

作　　者：祝庆斌 王玮[1] 康庄[1] 刘小飞 

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001

出　　处：《中国海洋平台》2017年第1期85-90,共6页China offshore Platform

基　　金：国家自然科学基金资助项目(51209047)

摘　　要：通过建立缓波型钢悬链立管(Steel Catanary Riser,SCR)系统的时域耦合分析有限元模型,在时域内对设计好的系统进行动态分析。在分析中,考虑系统悬链线的质量、阻尼和流体加速度等随时间变化而产生的影响。通过分析管壁的厚度、浮力块布置长度、浮力块外径等重要参数对立管系统动力响应的影响,建立并完善钢悬链立管系统相关参数的敏感性分析。在原定参数的基础上重新选定优化后的参数,进行疲劳分析,并预估其疲劳寿命,验证模型的合理性。A coupling analysis model in time domain between FPSO and Steel Catenary Riser（SCR）system is established.The dynamic response of the designed SCR system is analyzed in time domain.In time domain analysis,the influence of the damping,fluid acceleration and mass change over time is considered.The influence of different parameters on the system is compared and analyzed,including the wall thickness of riser,the length of buoyancy blocks and the diameter etc.It contributes to perfect the sensitivity analysis optimization of the SCR system.The optimized parameters are selected based on the original parameters.Fatigue analysis is used to forecast its fatigue life and the rationality of the model is verified.

关 键 词：钢悬链立管(SCR) 时域耦合分析 敏感性分析 疲劳寿命 

分 类 号：TE973[石油与天然气工程—石油机械设备]