Abstract
The research on structural vibration and sound radiation of underwater ring-ribbed cylindrical shell, which is coated with a kind of deadening and decoupling materials, becomes a focus in recent years. This paper analyzes the problem on two aspects: model experiment and numerical calculation. The model experiment is carried out including three cases firstly, in which the structural vibration response and radiating acoustic field are measured respectively, and the results gained in these three cases are analyzed to discuss the effect of reducing structural vibration and radiating noise of the deadening and decoupling materials. The coupling FEM/BEM and the SEA methods are both used in numerical calculation, i.e. the arithmetic of the coupling FEM/BEM method is adopted to calculate the low frequency characteristics and the SEA method is adopted to calculate the medium-high frequencies characteristics of the model. By comparing experimental results with numerical calculation results, it is proved that the algorithm adopted in this paper is reasonable.
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YAO Xiong-Liang is a Professor and Dean of the College of Shipbuilding Engineering, Harbin Engineering University. He was born in 1963. His current research includes explosion, noise and vibration control, fluid-structure analysis, etc.
LIU Qing-Jie, born in 1980, is a Master of Engineering in the Major of Analysis of Structural Dynamics (Vibration, Impact, Noise, Control).
YU Xiu-Bo, born in 1982, is a Master of Engineering in the Major of Ship Structural Dynamics and Explosion.
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Yao, Xl., Liu, Qj. & Yu, Xb. Research on vibration and near-field sound radiation of ring-ribbed cylindrical shell coated deadening and decoupling materials. J Mar. Sc. Appl. 6, 21–30 (2007). https://doi.org/10.1007/s11804-007-6022-8
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DOI: https://doi.org/10.1007/s11804-007-6022-8
Keywords
- ring-ribbed cylindrical shell
- vibration and sound radiation
- model experiment
- coupling FEM/BEM method
- SEA