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.
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.
出处
《长沙理工大学学报（自然科学版）》
CAS
2006年第4期34-38,共5页
Journal of Changsha University of Science and Technology:Natural Science
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
plate-type structure
incompressible viscous flow
mode localization
asymmetric parameter
