Hybrid meta-structure for broadband waterborne sound absorption
Source abstract
Abstract
A new hybrid-mechanism metastructure combined resonances of locally resonant scatterers and air cavities is proposed for broadband waterborne sound absorption. In the design, the locally resonant scatterers are embedded into the backing plate of a rubber layer with air cavities. The results demonstrate significant absorption improvement in the low-frequency range using the locally resonant scatterers. Cavities of mixed sizes and locally resonant scatterers of mixed types can be used to achieve efficient absorption over an ultrawide band. This broadband absorption is found to be attributed to the hybrid-mechanism of the resonances of the cavities and the locally resonant scatterers. Furthermore, the absorption mechanism is illustrated by the displacement patterns, the absorption contribution decomposition analysis, and the effective medium theory.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Noise Effects and Management · Vibration Control and Rheological Fluids
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Vibration and Acoustics Research Group, Laboratory of Science and Technology on Integrated Logistics Support, College of Intelligence Science and Technology, National University of Defense Technology , Changsha, Hunan 410073, China
Funding
National Natural Science Foundation of China
References (36)
Show source-provided references
1. Resonant sound absorbers
2. Effect of absorption layer on interior sound field of sonar dome10.1007/s12204-010-1032-0 ↗
3. Sound absorption of a rib-stiffened plate covered by anechoic coatings10.1121/1.4913782 ↗
4. Subwavelength and quasi-perfect underwater sound absorber for multiple and broad frequency bands10.1121/1.5048797 ↗
5. Acoustic performance of gratings of cylindrical voids in a soft elastic medium with a steel backing10.1121/1.4986941 ↗
6. Ultrathin metasurface with high absorptance for waterborne sound10.1063/1.5009382 ↗
7. Theoretical requirements and inverse design for broadband perfect absorption of low-frequency waterborne sound by ultrathin metasurface10.1038/s41598-018-37510-w ↗
8. Influence of hole shape on sound absorption of underwater anechoic layers10.1016/j.jsv.2018.04.008 ↗
9. One-dimensional model for acoustic absorption in a viscoelastic medium containing short cylindrical cavities10.1121/1.381528 ↗
10. Sound absorption by viscoelastic coatings with periodically distributed cavities10.1121/1.2190165 ↗
11. Pulsation oscillations of cavities in rubber10.1121/1.1909475 ↗
12. Underwater sound absorbers: A review of published research with an annotated bibliography
13. Anechoic coatings obtained from two- and three-dimensional monopole resonance diffraction gratings10.1121/1.3689852 ↗
14. Acoustic anechoic layers with singly periodic array of scatterers: Computational methods, absorption mechanisms, and optimal design10.1088/1674-1056/23/10/104304 ↗
15. Locally resonant sonic materials10.1126/science.289.5485.1734 ↗
16. Controlling sound with acoustic metamaterials10.1038/natrevmats.2016.1 ↗
17. Sound reduction by metamaterial-based acoustic enclosure10.1063/1.4902339 ↗
18. Compact acoustic double negative metamaterial based on coexisting local resonances10.1063/1.5052026 ↗
19. Acoustic wave transmission channel based on phononic crystal line defect state10.1063/1.5098819 ↗
20. Dissipative elastic metamaterials for broadband wave mitigation at subwavelength scale10.1016/j.compstruct.2015.09.048 ↗
21. Wave propagation and absorption of sandwich beams containing interior dissipative multi-resonators10.1016/j.ultras.2016.12.014 ↗
22. Experimental demonstration of a dissipative multi-resonator metamaterial for broadband elastic wave attenuation10.1016/j.jsv.2018.08.035 ↗
23. Sound absorption of locally resonant sonic materials10.1088/0256-307x/23/8/047 ↗
24. Low-frequency acoustic absorption of localized resonances: Experiment and theory10.1063/1.3284943 ↗
25. Effects of locally resonant modes on underwater sound absorption in viscoelastic materials10.1121/1.3621074 ↗
26. Locally resonant phononic woodpile: A wide band anomalous underwater acoustic absorbing material10.1063/1.3216805 ↗
27. Wide-band underwater acoustic absorption based on locally resonant unit and interpenetrating network structure10.1088/1674-1056/19/2/026202 ↗
28. Optimization of locally resonant acoustic metamaterials on underwater sound absorption characteristics10.1016/j.jsv.2012.05.027 ↗
29. Underwater sound absorption characteristics of metamaterials with steel plate backing10.1016/j.apacoust.2019.04.016 ↗
30. Sound absorption by rubber coatings with periodic voids and hard inclusions10.1016/j.apacoust.2018.09.003 ↗
31. Acoustic transparency of nonhomogeneous plates (with repeating inclusions) using periodic structures methodology
32. Soft porous silicone rubbers with ultra-low sound speeds in acoustic metamaterials10.1038/srep40106 ↗
33. 1989 · 57
34. Analysis of the scattering of a plane acoustic wave by a doubly periodic structure using the finite element method: Application to Alberich anechoic coatings10.1121/1.401395 ↗
35. Method for retrieving effective properties of locally resonant acoustic metamaterials10.1103/physrevb.76.144302 ↗
36. 1980