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降低双层加肋圆柱壳低频噪声的声学设计技术
引用本文:艾海峰,陈志坚,孙谦.降低双层加肋圆柱壳低频噪声的声学设计技术[J].噪声与振动控制,2007,27(3):106-109.
作者姓名:艾海峰  陈志坚  孙谦
作者单位:[1]海军工程大学船舶与动力学院,武汉430033 [2]海军装备部,北京100841
摘    要:通过增大双层加肋圆柱壳的刚度降低低频噪声,使用数值仿真技术,评价结构的声学性能,发现增大双层加肋圆柱壳结构刚度,可在低频段有限频率范围降低结构的振动与声辐射。采用增大局部结构刚度的方法,对于降低水下结构的局部振动与低频噪声辐射效果显著。

关 键 词:声学  低频噪声  结构刚度  声学设计
文章编号:1006-1355(2007)03-0106-04
修稿时间:2006-09-11

Acoustics Design to Depress the Low Frequency Noise of the Ring-stiffened Cylinder with Double-shell
AI Hai-feng,CHEN Zhi-jian,SUN Qian.Acoustics Design to Depress the Low Frequency Noise of the Ring-stiffened Cylinder with Double-shell[J].Noise and Vibration Control,2007,27(3):106-109.
Authors:AI Hai-feng  CHEN Zhi-jian  SUN Qian
Affiliation:1. Power Eng. College, Naval Univ. of Engineering, Wuhan 430033, China; 2. Naval Dept. of Equipment, Beijing 100841,China
Abstract:The low frequency noise of the ring-stiffened cylinder with double shell is depressed by mcreasing structure stiffness, the numerical simulation is adopted to evaluate the acoustics performance, find that the vibration and acoustic radiation of the structure could be depressed by increasing the structure stiffness within the discontinuous range of the low frequency. By using this method, the impact on depressing the partial vibration and the radiation of the low frequency noise of the structure underwater is efficacious.
Keywords:acoustics  low frequency noise  structure stiffness  acoustic design
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