Research advances in acoustic metamaterials balancing noise reduction and ventilation performance
Some traditional structures of sound insulation or noise reduction hinder the transmission of airflow,failing to meet the needs of certain application scenarios.Acoustic metamaterials,the focus of current acoustic research,provide an effective solution for the design of novel ventilation and noise-reduction structures.This paper briefly discusses the limitations of traditional ventilation and noise-reduction structures in application,traces the emergence and development of acoustic metamaterials,and focuses on the latest progress in the application of several types of acoustic metamaterials in ventilation and noise reduction,such as Helmholtz resonance structure,space coiling structure,acoustic metacage and acoustic transmission adjustable structure.The structural characteristics,noise-reduction principles and ventilation characteristics of these metamaterials are summarized,and their obvious advantages in low-frequency broadband noise attenuation,ventilation effect and lightweight structure are presented.Finally,the development of this new field in three aspects,i.e.optimization design,field experiment and ventilation performance research,is proposed.
acoustic metamaterialnoise reductionventilation performancelow frequency broadband
国家科技期刊平台
NSTL
万方数据
维普
