声呐导流罩夹芯结构设计与声学性能  

A Sandwich Structure Design of Sonar Dome and Acoustic Performance

作　　者：朱伟杰 崔汉国[1] 何世平 ZHU Wei-jie;CUI Han-guo;HE Shi-ping(College of Power Engineering, Naval University of Engineering, Wuhan 430033;School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China)

机构地区：[1]海军工程大学动力工程学院,湖北武汉430033 [2]湖北工业大学机械工程学院,湖北武汉430068

出　　处：《指挥控制与仿真》2020年第3期131-135,共5页Command Control & Simulation

基　　金：国家自然科学基金面上项目(11374369)。

摘　　要：目前,国内船舶所使用的声呐导流罩大多为玻璃钢,虽然具有良好的透声性能,但在中高航速下受湍流的作用将产生很大的自噪声,降低了声呐的性能,甚至影响声呐正常工作。因此,提出一种采用周期性微穿孔处理的厚金属板声学超材料用作夹芯层材料,构造三层夹芯结构,可用作声呐导流罩的建造材料。通过COMSOL仿真模型分析,验证了经过一定分布规律微穿孔处理的钢板较均匀钢板有更高的透声系数,且基本不受钢板厚度的影响,构造的三层夹芯结构具有不错的透声性能。厚钢板同时也具有较高的刚度和强度,可以有效减少导流罩自噪声。该研究可为新型导流罩设计提供参考。At present,most of the sonar domes used in domestic ships are made of FRP.Although they have good sound transmission performance,they are subject to turbulence at medium and high speeds,which will generate a lot of self-noise,reduce the performance of sonar,and even affect the normal operation of sonar.In this paper,a thick metal plate acoustic metamaterial using periodic micro-perforation treatment is proposed as a sandwich layer material,and a three-layer sandwich structure is constructed,which can be used as a construction material for the sonar dome.Through the analysis of the COMSOL simulation model,it is verified that the steel plate treated by micro-perforation with certain distribution law has higher sound transmission coefficient than the uniform steel plate,and is basically not affected by the thickness of the steel plate.And the three-layer sandwich structure has good sound transmission properties.The thick steel plate also has high rigidity and strength,which can effectively reduce the self-noise of the dome.This study can provide a reference for the design of the new dome.

关 键 词：声呐导流罩 声学超材料 微穿孔板 夹芯结构 

分 类 号：U674.7[交通运输工程—船舶及航道工程]