| 陡波形立管涡激振动疲劳损伤参数敏感性分析 |
| |
| 引用本文： | 顾洪禄,郭海燕,刘震.陡波形立管涡激振动疲劳损伤参数敏感性分析[J].中国海洋大学学报(自然科学版),2021(5). |
| |
| 作者姓名： | 顾洪禄 郭海燕 刘震 |
| |
| 作者单位： | 中国海洋大学工程学院 |
| |
| 基金项目： | 山东省重点研究发展计划项目(2018GHY115045)资助。 |
| |
| 摘 要： | 基于柔性杆理论和尾流振子模型计算陡波形立管的涡激振动响应;综合使用S-N曲线法、雨流计数法、Palmgren-Miner线性累积疲劳理论对立管涡激振动导致的疲劳损伤进行计算分析。并以MATLAB为平台编写相应计算程序,将本文计算得到的静力分析结果、固有频率和疲劳损伤分别与专业海工计算软件OrcaFlex和已发表文献进行对比验证。进一步对陡波形立管在涡激振动下的疲劳损伤进行参数敏感性分析,结果表明:浮子段长度、浮力因子、弹性模量、海流速度、波浪高度对陡波形立管疲劳损伤均有较大影响,有望为陡波形立管的实际工程设计提供参考。
|
| 关 键 词： | 柔性杆理论 尾流振子模型 陡波形立管 涡激振动 疲劳损伤 敏感性分析 |
Parametric Sensitivity Analysis of Fatigue Damage in Steep-Wave Riser Due to Vortex-Induced Vibration |
| |
| GU Hong-Lu,GUO Hai-Yan,LIU Zhen.Parametric Sensitivity Analysis of Fatigue Damage in Steep-Wave Riser Due to Vortex-Induced Vibration[J].Periodical of Ocean University of China,2021(5). |
| |
| Authors: | GU Hong-Lu GUO Hai-Yan LIU Zhen |
| |
| Institution: | (College of Engineering, Ocean University of China, Qingdao 266100, China) |
| |
| Abstract: | The vortex-induced vibration response of the steep-wave riser was calculated based on the slender rods theory and wake oscillator model.The S-N curve method,Rain flow counting method and Palmgren-Miner linear cumulative fatigue theory were used to analyze the fatigue damage of riser under vortex-induced vibration.The corresponding calculation program was written with MATLAB.The results of static analysis,natural frequencies and fatigue damage calculated in this paper are compared with those of professional marine engineering software Orcaflex and published literature to verify.Then the parametric sensitivity analysis of fatigue damage in steep-wave riser due to vortex-induced vibration is carried out by using the program.The results show that the length of float segment,buoyancy factor,elastic modulus,current velocity and wave height have great influence on the fatigue damage of the steep-wave riser.It is expected to provide a reference for the actual engineering design of the steep-wave riser. |
| |
| Keywords: | slender rods theory wake oscillator model steep-wave riser vortex-induced vibration fatigue damage sensitivity analysis |
| 本文献已被 CNKI 维普 等数据库收录！ |
