中国舰船研究2015，Vol.10Issue(6)：68-73,6.DOI:10.3969/j.issn.1673-3185.2015.06.010
基于波数谱的双层圆柱壳外壳振动与声辐射特性分析
Analysis on the vibration and sound radiation characteristics of double cylindrical shells using wave number spectrums
谭路 1纪刚 1周其斗 1张纬康1
作者信息
- 1. 海军工程大学舰船工程系,湖北武汉 430033
- 折叠
摘要
Abstract
In order to explain the universal rules between the vibrational model and the sound radiation of double cylindrical shells, the coupling vibration responses of the structure are obtained with Finite Element Method combined with Boundary Element Method (FEM/BEM). Then, the radial vibration on the cylindri-cal coupling surface is transformed into the wave number domain with the wave number analysis spectrum method, which generates the vibration and radiation power spectrums. Next, the vibration and sound radia-tion characteristics are obtained by comparing the vibration power and radiation power associated with each component of regular waves. It is seen that the vibration of outer shell consists of many components in cir-cumference and is dominated by short waves in the axial direction. Meanwhile, the sound radiation is domi-nated by low order vibration components in circumference and long waves in the axial direction.关键词
波数谱/振动/声辐射/圆柱壳Key words
wave number spectrum/vibration/sound radiation/cylindrical shell分类
交通工程引用本文复制引用
谭路,纪刚,周其斗,张纬康..基于波数谱的双层圆柱壳外壳振动与声辐射特性分析[J].中国舰船研究,2015,10(6):68-73,6.
