Experimental and numerical investigations on acoustic damping of monoclinic crystalline wideband sound absorbing structures

作     者：XIE Su-chao HE Lei YAN Hong-yu ZHANG Feng-yi HE Guan-di WANG Jia-cheng 谢素超;何磊;严宏宇;张丰翼;何冠迪;王嘉诚

作者机构：Key Laboratory of Traffic Safety on TrackMinistry of EducationSchool of Traffic&Transportation EngineeringCentral South UniversityChangsha 410075China Joint International Research Laboratory of Key Technology for Rail Traffic SafetyChangsha 410075China National&Local Joint Engineering Research Center of Safety Technology for Rail VehicleChangsha 410075China 

基　　金：Project(52202455)supported by the National Natural Science Foundation of China Project(23A0017)supported by the Key Project of Scientific Research Project of Hunan Provincial Department of Education,China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2024年第31卷第6期

页      码：1931-1944页

摘      要：In order to overcome the limitations of traditional microperforated plate with narrow sound absorption bandwidth and a single structure,two multi-cavity composite sound-absorbing materials were designed based on the shape of monoclinic crystals:uniaxial oblique structure(UOS)and biaxial oblique structure(BOS).Through finite element simulation and experimental research,the theoretical models of UOS and BOS were verified,and their sound absorption mechanisms were *** the same time,the influence of multi-cavity composites on sound absorption performance was analyzed based on the theoretical model,and the influence of structural parameters on sound absorption performance was *** research results show that,in the range of 100-2000 Hz,UOS has three sound absorption peaks and BOS has five sound absorption *** frequency range of the half-absorption bandwidth(α>0.5)of UOS and BOS increases by 242% and 229%,*** with traditional microperforated sound-absorbing structures,the series and parallel hybrid methods significantly increase the sound-absorbing bandwidth of the sound-absorbing *** research has guiding significance for noise control and has broad application prospects in the fields of transportation,construction,and mechanical design.

主 题 词：monoclinic crystal microperforated plate acoustic metamaterials inclined cavity sound absorption 

学科分类：12[管理学] 083002[083002] 1204[管理学-公共管理类] 120402[120402] 0830[工学-生物工程类] 08[工学] 0837[0837] 

核心收录：

D　O　I：10.1007/s11771-024-5670-z

馆 藏 号：203128865...