噪声与振动控制2025，Vol.45Issue(5)：104-109,172,7.DOI:10.3969/j.issn.1006-1355.2025.05.017
迷宫开口管形声子晶体带隙及隔声性能研究
Band Gap and Sound Insulation Performance of Labyrinth Open Tubular Phonon Crystals
杜旭雅 1张军1
作者信息
- 1. 大连交通大学 机车车辆工程学院,辽宁 大连 116028
- 折叠
摘要
Abstract
In passive noise control engineering,isolation and absorption of middle and low frequency noise are the dif-ficult points.One of the effective methods to overcome the difficulty is to adopt new phonon crystals.In this paper,a laby-rinth open tubular phonon crystal structure was proposed.Based on the Bloch theorem and Helmholtz equation,the band-gap of the phonon crystal was calculated by means of the finite method.The sound insulation of the phonon crystal in different frequency ranges was also studied.The results show that the phonon crystal has an obvious sound insulation peak in the rang-es of 500 Hz,1 400 Hz and 1 600-2 000 Hz,corresponding to its band gap,and the sound insulation ability is improved sig-nificantly in the band gap ranges.After the optimization of structural parameters,the recording weight and sound insulation of the phonon crystal in the range of 1 000-1 500 Hz are increased by 8.73 dB,and the optimized phonon crystal has poten-tial application values in the control of low and medium frequency noises.关键词
声学/声子晶体/带隙特性/隔声/噪声控制Key words
acoustics/phonon crystal/band-gap characteristics/sound insulation/noise control分类
通用工业技术引用本文复制引用
杜旭雅,张军..迷宫开口管形声子晶体带隙及隔声性能研究[J].噪声与振动控制,2025,45(5):104-109,172,7.
