When a structure vibrates in water, large amount of computation will be unavoidable if the fluid finite element method is used to calculate the addedwatermass matrix and damping matrix.
当结构在静水中振动时，如采用流体有限元来计算流体的附加质量和附加阻尼，势必导致解题规模过大。
2
Then the relationship among vibration frequency of the plate in water and that in vacuo and the Nondimensionalized Added Virtual Mass Incremental (NAVMI) is obtain by utilizing Rayleigh method.
进而应用瑞利方法得到了薄板水中振动频率与真空中振动频率、无量纲附加虚质量增量之间的关系。
3
The experimental study of addedmass factor and viscous damping factor for cantilever tube confined in water by concentric tube was conducted in order to verify the result of theoretical analysis.