| 不可压缩流中板状结构的振动分析 |
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| 引用本文： | 文海霞.不可压缩流中板状结构的振动分析[J].长沙理工大学学报(自然科学版),2006,3(4):34-38. |
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| 作者姓名： | 文海霞 |
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| 作者单位： | 长沙理工大学,桥梁与结构工程学院,湖南,长沙,410076 |
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| 摘 要： | 研究了一个两跨板状结构的简单模型在不可压缩流中振动的固有特性.采用假设模态法建立了系统的运动微分方程,着重考察结构非对称对固有频率和模态局部化的影响.研究结果表明,结构非对称是导致模态局部化现象的主要因素,而结构的固有频率随流体速度的增大而减小.
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| 关 键 词： | 板状结构 不可压缩无粘性流 模态局部化 非对称参数 |
| 文章编号： | 1672-9331（2006）04-0034-05 |
| 收稿时间： | 2006-05-21 |
| 修稿时间： | 2006年5月21日 |
Vibration analysis of plate-type structure in incompressible flow |
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| WEN Hai-xia.Vibration analysis of plate-type structure in incompressible flow[J].Journal of Changsha University of Science and Technology:Natural Science,2006,3(4):34-38. |
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| Authors: | WEN Hai-xia |
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| Institution: | College of Bridge and Structure Engineering,Changsha University of Science and Technology,Changsha 410076, China |
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| Abstract: | The dynamical characteristic of a simple two-span parallel plate-type model vibrating in incompressible water is studied in this paper.The motion equation of the structure is established by using the assumption mode method.The influences of the asymmetric parameter on the natural frequency and phenomena of mode localization are investigated.The results show that the asymmetric parameter of length is the main factor that leads to the phenomena of mode localization,and the natural frequency of the structure decreases while increasing the velocity of the flow. |
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| Keywords: | plate-type structure incompressible viscous flow mode localization asymmetric parameter |
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