静压下含螺旋体空腔型覆盖层的吸声特性研究  

Research on the sound absorption characteristics of the cavity covering layer with spiral body under hydrostatic pressure

作　　者：应江 陈文炯 YING Jiang;CHEN Wenjiong(School of Naval Architecture Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学船舶工程学院,辽宁大连116024

出　　处：《舰船科学技术》2025年第1期113-119,共7页Ship Science and Technology

基　　金：国家自然科学基金资助项目(12072058)。

摘　　要：为了提高传统空腔型覆盖层在静压下的吸声性能,设计一种含有螺旋体结构的空腔型吸声覆盖层。在COMSOL中构建了吸声覆盖层的声学计算模型,研究了在不同静压作用下传统空腔型覆盖层与含螺旋体空腔型覆盖层的最大形变量与吸声性能。结果表明,在静水压力作用下,含螺旋体空腔型覆盖层的最大形变量要比传统空腔型覆盖层的最大形变量要小,最大形变量下降百分比随静压的增大而减小,并且始终保持在20%~30%之间,对比2种吸声覆盖层的吸声性能发现,螺旋体的加入,使覆盖层在100~10000 Hz频段内的平均吸声系数提高了20%~25%,平均吸声系数提升百分比随静压的增大而增大。In order to improve the sound absorption performance of the traditional cavity covering layer under static pressure,a kind of cavity covering layer with spiral structure was designed.The acoustic calculation model of the sound absorbing coating was constructed in COMSOL,and the maximum shape variable and the sound absorbing performance of the traditional cavity coating and the heliform cavity coating were studied under different static pressure.The results show that:Under the action of hydrostatic pressure,the maximum shape variable of the cavity covering layer with spiral body is smaller than that of the traditional cavity covering layer,and the decline percentage of the maximum shape variable decreases with the increase of static pressure,and it is always between 20%~30%.Comparing the sound absorption performance of the two kinds of sound absorbing covers,it is found that the addition of spiral body,the average sound absorption coefficient of the covering layer in the 100~10000 Hz band is increased by 20%~25%,and the increase percentage of the average sound absorption coefficient increases with the increase of static pressure.

关 键 词：静压 形变量 螺旋体 吸声系数 

分 类 号：U668.3[交通运输工程—船舶及航道工程]