Space harmonic analysis of sound radiation from a submerged periodic ring-stiffened cylindrical shell

被引：27
|
作者：
Yan, J [1 ]
Li, TY [1 ]
Liu, JX [1 ]
Zhu, X [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Dept Naval Architecture & Ocean Engn, Wuhan 43007, Peoples R China
来源：
APPLIED ACOUSTICS | 2006年 / 67卷 / 08期
基金：
中国国家自然科学基金;
关键词：
periodic ring-stiffened cylindrical shell; space harmonic analysis; radiated sound power;
D O I：
10.1016/j.apacoust.2005.11.008
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
An analytical method is developed to study radiated sound power characteristics from an infinite submerged periodically stiffened cylindrical shell excited by a radial cosine harmonic line force. The harmonic motion of the shell and the pressure field in the fluid are described by Flugge shell equations and Helmholtz equation, respectively. By using periodic theory of space harmonic analysis, the response of the periodic structure to harmonic excitations has been obtained by expanding it in terms of a series of space harmonics. Radiated sound power on the shell wall along the axial direction and the influence of different parameters on the results are studied, respectively. A conclusion is drawn that the stiffeners have a great influence at low and high frequencies while have a slight influence at intermediate frequencies for low circumferential mode orders. The work will give some guidelines for noise reduction of this kind of shell. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：743 / 755
页数：13
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