A Helmholtz structure for prospective application of low frequency noise reduction
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- A Helmholtz structure for prospective application of low frequency noise reduction
- 发表刊物：
- Noise Control Engineering Journal
- 摘要：
- In this work, we numerically investigate the existence of low-frequency band
gaps in the Helmholtz resonance structure. Finite element method is utilized
to calculate the band structure and transmission spectrum. Three band gaps
and two neighboring partial band gaps are found from 0 to 4000 Hz. Geometrical
parameters which may affect the band gap width or positions such as the
inlet width and length are analyzed. Results indicate that the first band gap will
become wider and higher with the increase of the inlet width of the resonators.
However, variation trend of the first band gap is completely opposite when inlet
length becomes longer. Calculated transmission spectrum validates the band
structure well. This designed and calculated structure has potential application
in the low-frequency noise reduction.
- 合写作者：
- Dong Guan, Jiu Hui Wu
- 卷号：
- 63(1)
- 页面范围：
- 20-25
- 是否译文：
- 否
- 发表时间：
- 2014-12-28