摘要
基于SYSNOISE边界元声场数值分析软件,对半球形声纳导流罩在不同背板材料(包括刚性材料和有限阻抗材料)条件下的内部声场进行了计算与分析。研究表明:导流罩内部存在驻波场现象,频率越高越明显,且与背板材料类型基本无关;背板材料对导流罩内部声场的平稳程度影响较大,在导流罩设计时应予以充分考虑。
In this paper,the sound field in the sonar dome of hemispherical shape is calculated and analyzed when the back board（including the rigid material and the material of limited impedance） is different,and the computational method is based on SYSNOISE which is a numerical software making use of the boundary element method in sound field analysis.Firstly,the analysis indicates that there is standing wave field in the dome,and the wave field has no relation to the material of the back board.Secondly,it indicates that the back board has the great influence on the sound field and it needs to consider the factor of the back board fully when designing the dome.
出处
《机械工程与自动化》
2010年第3期71-72,75,共3页
Mechanical Engineering & Automation
关键词
声纳导流罩
背板
驻波场
声场分析
sonar dome
back board
standing wave field
sound field analysis
