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| 大长细比柔性杆件涡激振动实验 | |
| 引用本文： | 唐国强,吕林,滕斌,谢彬,宋吉宁,张建侨,吴浩.大长细比柔性杆件涡激振动实验[J].海洋工程,2011,29(1). |
| 作者姓名： | 唐国强 吕林 滕斌 谢彬 宋吉宁 张建侨 吴浩 |
| 作者单位： | 1. 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024 2. 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024;大连理工大学,深海工程研究中心,辽宁,大连,116024 3. 中海石油研究中心技术研究部,北京,100027 4. 中国水产科学研究院,渔业工程研究所,北京,100141 |
| 基金项目： | 国家863计划资助项目(2006AA09A103); 国家自然科学基金资助项目(50921001); 海岸和近海工程国家重点实验室开放基金资助项目(LP0904) |
| 摘 要： | 涡激振动(vortex-induced vibration,VIV)是导致深海细长柔性立管发生疲劳破坏的重要因素。采用实验观测手段研究了长细比为1 750的柔性立管多模态涡激振动特性。实验中,通过采用拖车拖拉立管模型在水池中匀速行进来模拟均匀流作用下的涡激振动响应。利用光纤光栅传感器测量立管模型在横流向(cross-flow,CF)和顺流向(in-line,IL)的应变,进而通过模态分解的方法,获得立管模型涡激振动的位移。在此基础上,研究了CF以及IL方向的响应频率、位移标准差的平均值和最大值等随流速的变化规律,并分析了立管模型上测点的运动轨迹及其影响因素。 |
| 关 键 词： | 细长柔性立管 涡激振动 动力响应 模态分解 |
Laboratory measurement of vortex-induced vibration of long flexible riser |
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| TANG Guo-qiang,LV Lin,TENG Bin,XIE Bin,SONG Ji-ning,ZHANG Jian-qiao,WU Hao.Laboratory measurement of vortex-induced vibration of long flexible riser[J].Ocean Engineering,2011,29(1). | |
| Authors: | TANG Guo-qiang LV Lin TENG Bin XIE Bin SONG Ji-ning ZHANG Jian-qiao WU Hao |
| Institution: | TANG Guo-qiang1,LV Lin1,2,TENG Bin1,XIE Bin3,SONG Jining1,ZHANG Jian-qiao4,WU Hao1(1.State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China,2.Center for Deepwater Engineering,3.CNOOC Research Center,Beijing 100027,4.Fishery Engineering Research Institute of Chinese Academy of Fishery Sciences,Beijing 100141,China) |
| Abstract: | Vortex-induced vibration(VIV) is one of the most important factors accounted for the fatigue damage of long-flexible risers in deep water.Laboratory tests were conducted to investigate the multi-mode dynamic responses of riser model subjected to steady current flow.The riser model is 28 m in length and 1.6 cm in diameter,leading to a large aspect ration of 1750.The riser model was installed on a towing carriage,which might move horizontally above a wave basin with desirable speeds.Thus a uniform current cou... |
| Keywords: | long-flexible riser vortex-induced vibration(VIV) dynamic response modal analysis |
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