噪声与振动控制2018，Vol.38Issue(z1)：239-241,3.DOI:10.3969/j.issn.1006-1355.2018.Z1.050
倾斜微穿孔板结构的吸声特性研究
Sound Absorption Characteristics of Inclined Micro-perforated Panel Absorber
摘要
Abstract
In practical application, an inclined micro-perforated panel (IMPP) absorber is introduced to improve sound absorption performance. First, the IMPP absorber can be visualized as a combination of series of the traditional MPP absorbers with a large number of air cavities of different depths. The sound absorption characteristics of the IMPP absorber for different incident angles and perforated direction of perforations are derived, based on the MPP theory and the parallel connection rule of acoustic impedance. In order to verify the theoretical model, the prediction of the model is compared with the existing experimental results. Using the proposed model, the perforated direction of perforations, the inclined angle, and the micro-perforated diameter show great effects on the sound absorption characteristics of the inclined micro-perforated panel absorber.关键词
声学/倾斜微穿孔板,吸声性能,微穿孔方向,声阻抗Key words
acoustics/inclined MPP absorber/sound absorption/perforated direction of perforations/acoustic impedance分类
建筑与水利引用本文复制引用
宁景锋,赵桂平..倾斜微穿孔板结构的吸声特性研究[J].噪声与振动控制,2018,38(z1):239-241,3.基金项目
西安交通大学国家重点实验室开放课题资助项目(SV2018-KF-12) （SV2018-KF-12）
