| 基于小波变换的顶张力立管涡激振动规律实验研究 |
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| 引用本文： | 张永波,郭海燕,孟凡顺,刘晓春. 基于小波变换的顶张力立管涡激振动规律实验研究[J]. 振动与冲击, 2011, 30(2): 149-154. DOI: |
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| 作者姓名： | 张永波 郭海燕 孟凡顺 刘晓春 |
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| 作者单位： | 1. 中国海洋大学,工程学院,青岛,266071
2. 中国海洋大学,海洋地球科学学院,青岛,266071 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 为研究顶张力立管在海流作用下的涡激振动规律，在大型波浪流水槽中进行涡激振动模型实验。实验中立管竖直固定于实验支架上，外部承受不同速度的流体作用，上端施加变化的顶张力。立管模型上均匀布置六个测点，根据每个测点布置的两个应变计，分别测得来流向和横向两个方向振动响应。通过小波变换方法对实验数据进行时间频域分析，得到立管涡激振动频率和振动幅值以及来流向与横向的耦合振动规律，考察顶张力变化对立管自振频率以及涡激振动的影响。
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| 关 键 词： | 顶张力立管 涡激振动 模型实验 小波变换 |
| 收稿时间： | 2010-02-08 |
| 修稿时间： | 2010-05-31 |
Model tests for vortex-induced vibration of a top tension riser based on wavelet transformation |
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| ZHANG Yong-bo,GUO Hai-yan,MENG Fan-shun,LIU Xiao-chun. Model tests for vortex-induced vibration of a top tension riser based on wavelet transformation[J]. Journal of Vibration and Shock, 2011, 30(2): 149-154. DOI: |
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| Authors: | ZHANG Yong-bo GUO Hai-yan MENG Fan-shun LIU Xiao-chun |
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| Affiliation: | ZHANG Yong-bo1,GUO Hai-yan1,MENG Fan-shun2,LIU Xiao-chun1(1.College of Engineering,Ocean University of China,Qingdao 266071,China,2.College of Marine Geosciences,China) |
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| Abstract: | In order to study vortex-induced vibration(VIV) characteristics of a top tension riser subjected to marine current,model tests of VIV were conducted in a large wave-current flume.The riser model with changing top tension was attached vertically to the supporting structure and external current with different velocities acted on the model.The cylindrical model was equipped with six measured stations distributing averagely along the riser and each of them had two strain gauges to measure the oscillation respon... |
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| Keywords: | top tension riser(TTR) vortex-Induced Vibration(VIV) model test wavelet transformation |
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