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| 钢悬链式立管涡激振动疲劳损伤参数分析 | |
| 引用本文： | 高云,宗智,周力,曹静.钢悬链式立管涡激振动疲劳损伤参数分析[J].船舶力学,2012(8):943-953. |
| 作者姓名： | 高云 宗智 周力 曹静 |
| 作者单位： | 1. 大连理工大学工业装备与结构国家重点实验室,辽宁大连,116024 2. 大连理工大学运载工程与力学学部,辽宁大连,116024 3. 中国海洋石油总公司研究中心,北京,100027 |
| 基金项目： | 创新研究群体科学基金，国家重点基础研究发展计划(973)资助项目 |
| 摘 要： | 针对钢悬链式立管的结构特性,采用了简化后的振动模型。先对立管进行了模态分析;再根据立管的模态特性结合环境水流参数,采用模态叠加法对立管进行了涡激振动疲劳损伤分析。分析过程中,通过改变流速大小、立管壁厚、立管外径、内部介质以及抑制立管涡激振动的螺旋列板长度等参数,对立管的涡激振动疲劳损伤进行了相应的参数分析。结果表明:立管疲劳损伤随水流速度的增大、立管外径的增大以及内部介质密度的降低呈现上升趋势,但是壁厚变化对立管疲劳损伤大小影响却不显著。 |
| 关 键 词： | 钢悬链式立管 涡激振动 疲劳损伤 参数分析 模态叠加法 |
Parameters analysis of vortex induced vibration fatigue damage on steel catenary riser |
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| GAO Yun , ZONG Zhi , ZHOU Li , CAO Jing.Parameters analysis of vortex induced vibration fatigue damage on steel catenary riser[J].Journal of Ship Mechanics,2012(8):943-953. | |
| Authors: | GAO Yun ZONG Zhi ZHOU Li CAO Jing |
| Institution: | 1 Industry Equipment and Structure State Key Laboratory,Dalian University of Technology,Dalian 116024,China;2 Faculty of Vehicle Engineering and Mechanics,Dalian University of Techonlogy,Dalian 116024,China;3 Technology research department,China National Offshore Oil Corporation,Beijing 100027,China) |
| Abstract: | According to the characteristics of steel catenary riser,a simplified model of vibration is established.Modal analyses of risers are carried out;vortex induced vibration fatigue damages are analyzed based on modal superposition method combined with modal properties and environmental current parameters.Parameters analyses of vortex induced vibration fatigue on steel catenary risers are executed by changing current velocities,risers’ wall thicknesses,outer diameters,inner fluid densities and strake lengths.The results indicate that fatigue damages of risers increase with current velocity and outer diameter increase and inner fluid density decreases respectively,but the fatigue damages do not change obviously when wall thickness varies. |
| Keywords: | Steel Catenary Riser Vortex Induced Vibration fatigue damage parameters analysis mode superposition method |
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