摘要
为解决动力设备运转过程中所产生低频噪声的问题,在薄膜型声学结构的基础上,提出一种穿孔板-膜腔复合型声学结构,采用有限元方法探究结构的声振特性及其隔声机理。以穿孔板-膜腔复合型声学结构为基础,建立大尺寸隔声壁板模型,系统探究结构尺寸、材料参数及构型方式对其隔声性能的影响规律,并结合仿真结果提出一种多层薄膜型穿孔板-膜腔复合型隔声板设计方案,可有效拓宽结构隔声频带,改善隔声性能。
In order to solve the problem of low frequency noise during the operation of power equipment,based on the membrane acoustic structure,a kind of perforated plate-membrane cavity composite acoustic structure was proposed.By the finite element method,the acoustic and vibration characteristics of the structure and its sound insulation mechanism were analyzed.Based on the structure,a large size acoustic insulation panel model was established,the influences of structural size,material parameters and configuration mode on its sound insulation performance were systematically investigated,and a multi-layer thin-film perforated panel-membrane cavity composite acoustic insulation panel design scheme was proposed according to the simulation results,which can effectively broaden the structural sound insulation band and improve the sound insulation performance of the panel.
作者
胡世尧
叶天贵
李青霞
上官洋
靳国永
HU Shiyao;YE Tiangui;LI Qingxia;SHANG Guanyang;JIN Guoyong(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China;Electric Power Planning Institute Co.,Ltd.,Beijing 100120,China)
出处
《噪声与振动控制》
CSCD
北大核心
2023年第6期233-239,288,共8页
Noise and Vibration Control
基金
国家科技重大专项资助项目(J2019-Ⅱ-0013-0034)。
关键词
声学
低频噪声
薄膜型声学结构
有限元方法
声振特性
隔声频带
acoustics
low frequency noise
membrane acoustic structure
finite element method
acoustic and vibration characteristics
acoustic band isolation