THEORETICAL INVESTIGATION OF SOUND INSULATION OF ASYMMETRIC COUPLED-MEMBRANE ACOUSTIC METAMATERIALS

摘要：

　　Being as simple and lightweight structure in controlling low frequency noise,membrane-type acoustic metamaterial has been paid more attention.In this paper,theoretical model and analytical approach are presented to study the low frequency transmission loss performances of coupled-membrane type acoustic metamaterial(CMAM).The influences of the symmetric and asymmetric structures on the noise attenuation characteristics are discussed.The results demonstrate that asymmetric structure of CMAM is an ideal sound insulation material.By choosing proper material properties,multi-frequency and broad band sound insulation can be get in low frequency range (< 1000Hz).

关键词： Acoustic metamaterials Elastic membrane Asymmetric Low frequency

作者: Ding TONG Hong-yan TIAN Yan-li ZHANG Xin LI

作者单位: Science and Technology on Diesel Engine Turbocharging Laboratory, Tianjin, China School of Mechanical Engineering, Hebei University of Technology, Tianjin, China

会议类型: 国际会议

会议名称: The 2019 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2019(第14届)全国压电和声波理论及器件技术研讨会)

会议地点: 石家庄

会议语种:英文

页码: 351-355

在线出版日期: 2019-11-01（万方平台首次上网日期，不代表论文的发表时间）