| 大柔性圆柱体两自由度涡激振动试验研究 |
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| 引用本文： | 黄维平,曹静,张恩勇,唐世振.大柔性圆柱体两自由度涡激振动试验研究[J].力学学报,2011,43(2):436-440. |
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| 作者姓名： | 黄维平 曹静 张恩勇 唐世振 |
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| 作者单位： | 1. 中国海洋大学 山东省海洋工程重点实验室;2. 中海油研究总院 深水工程重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(51079136,50639030)~~ |
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| 摘 要： | 基于模型试验研究了柔性圆柱体两自由度涡激振动问题, 研究了顺流向涡激振动和横向
涡激振动的频率与振幅关系, 提出了考虑流固耦合的两自由度涡激振动非线性分析模型. 研
究表明, 在不同的流速(雷诺数)范围, 柔性圆柱体顺流向涡激振动与横向涡激振动的频率
比和幅值比是不同的; 在非锁定区, 圆柱体的顺流向振动频率与横向振动频率相同, 在锁定
区, 圆柱体的顺流向振动频率是横向振动频率的两倍; 在非锁定区, 顺流向振幅与横向振幅
比约为1, 而在锁定区, 顺流向振幅与横向振幅比约为1/3~2/3.
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| 关 键 词： | 涡激振动 流固耦合 顺流向振动 脉动拖曳力 模型试验 |
| 收稿时间： | 2010-08-02 |
| 修稿时间： | 2010-12-14 |
ON VORTEX INDUCED VIBRATION IN TWO-DEGREE-OF-FREEDOMS OF FLEXIBLE CYLINDERS |
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| Huang Weiping
,
Cao Jing
,
Zhang Enyong
,
Tang Shizhen.ON VORTEX INDUCED VIBRATION IN TWO-DEGREE-OF-FREEDOMS OF FLEXIBLE CYLINDERS[J].chinese journal of theoretical and applied mechanics,2011,43(2):436-440. |
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| Authors: | Huang Weiping Cao Jing Zhang Enyong Tang Shizhen |
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| Institution: | Huang Weiping~(*,2)) Cao Jing~ Zhang Enyong~ Tang Shizhen~* *(Shandong Key Lab.of Ocean Eng.,Ocean Univ.of China,Qingdao 266100,China) (Deepwater Eng.Key Lab.,CNOOC Research Center,Beijing 100027,China) |
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| Abstract: | In-line and cross-flow vortex-induced vibration(VIV) of flexible cylinders is studied based on the VIV experiment.The relationship of two-degree-of-freedom of vortex-induced vibration of flexible cylinders is also investigated.A nonlinear model,with fluid-structure interaction,of two-degree-of-freedom VIV of flexible cylinders is then proposed.It is shown that the ratio of the frequencies and amplitudes of in-line and cross flow VIV of the cylinders changes with current velocity/Reynolds number.The ratio of... |
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| Keywords: | vortex-induced vibration fluid-structure interaction vibration in line oscillating drag force model test |
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