分布式动力吸能复合结构声纳透声窗设计研究  

Distributed energy absorbing composite structure for sonar dome design

作　　者：沈琪[1,2] 耿佳傲 时尚 SHEN Qi;GENG Jia-ao;SHI Shang(China Ship Scientific Research Center,Wuxi 214082,China;Taihu Laboratory of Deep-sea Technological Science,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082 [2]深海技术科学太湖实验室,江苏无锡214082

出　　处：《船舶力学》2024年第7期1124-1132,共9页Journal of Ship Mechanics

摘　　要：本文针对潜艇声纳透声窗低频水动力噪声控制需求,基于平板与声腔的耦合振动方程,利用声振传递矩阵、模态展开法以及湍流边界层脉动压力频率波数谱等,建立多层复合平板的水动力自噪声计算模型。根据动力吸振特性分析,形成分布式吸能单元控制下的平板振动噪声方程,评估分布式吸能复合结构透声窗水动力自噪声,通过循环水槽试验验证其水动力自噪声降噪效果,为新型低噪声透声窗设计提供技术支撑。In this paper,for the demand of low-frequency hydrodynamic noise control in submarine sonar dome,based on the coupled vibration equations of the plate and acoustic cavity,the hydrodynamic self-noise calculation model of the multi-layer composite plate was established by using the acoustic vibration transfer matrix,modal expansion method and wave vector-frequency spectrum of turbulence boundary layer pressure.According to the analysis of dynamic vibration absorption characteristics,the vibration and noise equations of the plate under the control of distributed energy absorption unit were formed,and the hydrodynamic selfnoise of the distributed power absorption composite sonar domes was evaluated.The hydrodynamic self-noise reduction effect was verified through the large cavitation channel tests,providing technical support for the de⁃sign of advanced low-noise sonar domes.

关 键 词：水动力自噪声 声纳透声窗 动力吸振 

分 类 号：O427.5[理学—声学]