Abstract
Here, a new type oblique-section nested resonator was designed and its sound-absorbing characteristics were studied. Impedance tube test results showed that different combinations of single layer structures have a tunable low-frequency wide frequency-band sound-absorbing effect; the sound absorption mechanism is air frictions in micro-structure areas and structural resonances causing sound energy dissipated into heat energy. Acoustic-electric analogy model tests showed that sound absorption's peak and bandwidth can be improved through changing resonator structures' size and combinations; the proposed nested resonator is easy to fabricate, and has a guide action in low frequency sound absorption engineering.
| Translated title of the contribution | Sound absorption characteristics of a new type oblique-section nested resonator |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 190-194 |
| Number of pages | 5 |
| Journal | Zhendong yu Chongji/Journal of Vibration and Shock |
| Volume | 37 |
| Issue number | 21 |
| DOIs | |
| State | Published - 15 Nov 2018 |