多孔夹芯层组合方式对夹层板隔声特性影响研究  

Study on Sound Insulation Performance of Sandwich Panels with Porous Elastic Cores

作　　者：魏斌 张冠军 陈足君 胡方涛 WEI Bin;ZHANG Guanjun;CHEN Zujun;HU Fangtao(School of Energy and Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Key Laboratory of Ministry of Education of High Performance Ship Technology,Wuhan University of Technology,Wuhan 430063,China;No.4812 PLA Factory,Anqing 246001,Anhui,China)

机构地区：[1]武汉理工大学能源与动力工程学院,武汉430063 [2]武汉理工大学高性能船舶技术教育部重点实验室,武汉430063 [3]中国人民解放军第四八一二工厂,安徽安庆246001

出　　处：《噪声与振动控制》2021年第3期228-233,共6页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(51909201);高性能船舶技术教育部重点实验室开放基金课题资助项目(gxnc18041401)。

摘　　要：因具有重量轻、隔声量高等优点,夹层板被广泛地应用于船舶结构及设备的隔声设计。以弹性多孔吸声夹芯层合板为研究对象,采用基于有限元和自动匹配层技术的直接声振耦合计算方法求解结构在自由边界条件下的声传递损失,分析不同多孔吸声材料组合及排列方式对结构隔声特性的影响,结果表明组合夹芯层基于比例和排列方式的不同表现出不同的隔声特性,在工程应用中针对不同的噪声频谱,采用与特定的组合排列方法构造类似的夹层板结构可提高结构的隔声性能、实现结构的轻量化并减少研发新材料的成本。Sandwich panels,due to their advantages of light weight and high sound insulation,are widely used in sound insulation design of ship structures and equipment.Taking the sandwich panels with porous elastic cores as the research object,the direct acoustic vibration coupling method based on finite element method and automatically matched layers technique was used to solve the sound transmission loss of the structures under the free boundary condition.The influence of different combinations and arrangements of the porous elastic materials on the sound insulation characteristics of the structures was analyzed.The results show that the composite sandwich panels have different sound insulation characteristics according to the different proportion and arrangement of the pores.In engineering applications,according to the different noise spectrum,the similar sandwich panel structures can be constructed by the proposed combination arrangement method to improve the sound insulation performance to realize the lightweight of the structure and reduce the cost of the development of the new materials.

关 键 词：声学 夹层板 多孔弹性材料 等效流体模型 周期结构 隔声特性 

分 类 号：TU112.41[建筑科学—建筑理论]