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圆柱壳体振动声辐射效率数值计算分析 15
文章编号:1006 - 1355(2006) 04 - 0051 - 04
圆柱壳体振动声辐射效率数值计算分析
贺晨,盛美萍,石焕文,刘志宏
(西北工业大学航海学院,西安 710072)
摘要:利用有限元、边界元和统计能量分析方法并结合软件对圆柱壳体在流场中受激振动及声辐射效率作
了数值计算分析研究。利用 ANSYS 软件计算壳体的模态及其在流场中受点激励时的振动响应。然后结合 SYS
NOISE 软件和 AU TOSEA 软件分别计算壳体在流场中声辐射效率在低频段和高频段时的频率响应。从而建立一
套圆柱壳2 体2在流场中振动声辐射效率在全频段的数值计算分析方法。
关键词:声学;圆柱壳体;振动;声辐射效率;数值计算
中图分类号: TB532 ;241. 82 文献标识码:A
The Numerical Analysis of Vibration and Sound Radiation
Eff iciency from a Cylindrical Shell
HE Chen , S HEN G Mei ping , S HI Huan wen , L IU Zhi hong
(College of Marine , Northwestern Polytechnical University , Xi′an 710072 China)
Abstract :Numerical analysis of vibration and sound radiation efficiency from a submerged cylin
drical shell has been carried out by using FEM methods , BEM methods and statistical energy methods.
The modes of shells and vibration response are calculated by ANSYS software. Then , the radiation ef
ficiency at low frequency and frequency response at high frequency in fluid puted respectively
by both SYSNOISE software and AU TOSEA software. Thus pletely pute analysis
method is established in fluid about vibrational radiation efficiency at full frequency.
Key words :acoustics ;cylindrical shell ;vibration ;sound radiation efficiency ;numerical analysis
声隐身技术在水下目标隐身技术中仍然占据主技术,可计算一般复杂弹性结构的水下耦合振动问
导地位。水下目标的声隐身性能主要体现在抗敌