The multi-bandgap of local effect phononic crystal
Source abstract
Abstract
A design method of a phononic crystal structure with a local effect is introduced, and the mechanism and influencing factors (elastic modulus, density, local layer thickness) of the bandgap are analyzed. The finite element method is used to calculate the eigenfrequency. The first bandgap width accounts for more than 98% of the frequency below 20 000 Hz. Two kinds of materials with different wave velocities are arranged periodically to form a two-dimensional local effect structure. Due to the influence of the local effect, when the elastic wave propagates in the local layer, the wave propagation will be restrained, and the eigenfrequency spectrum presents a series of discrete energy levels. The material parameters and structural parameters of the transmission layer have a great influence on the bandgap. The first bandgap is an ultra-wide low frequency bandgap, and the bandgap frequency ranges from 238 to 18857 Hz. This periodic structure with the local effect has great potential application value in noise and vibration suppression.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Noise Effects and Management · Hearing Loss and Rehabilitation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of astrodynamics 1 , Xian 710038, China
Xi’AN TangCheng Hospital 2 , Xian 710038, China
References (22)
Show source-provided references
1. Large band gaps in phononic crystal slabs with rectangular cylinder inclusions parallel to the slab surfaces10.1016/j.jpcs.2013.02.030 ↗
2. Band structures in two-dimensional phononic crystals with periodic Jerusalem cross slot10.1016/j.physb.2014.08.035 ↗
3. Low-frequency band gaps in phononic crystals with composite locally resonant structures
4. Complete bandgap in three-dimensional holey phononic crystals with resonators10.1115/1.4023823 ↗
5. Robustness of conventional and topologically protected edge states in phononic crystal plates10.1103/physrevb.98.054307 ↗
6. Investigating simple designs of phononic crystal plates and their influence on the wave propagation properties
7. Hybrid phononic crystals for road-band frequency noise control by sound blockibng and localization10.1121/1.4758985 ↗
8. Enhancement of the mechanical and acoustical properties of flexible polyurethane foam/waste seashell composites for industrial applications10.1177/0021955x221088392 ↗
9. Fabrication of cost-effective double layers composite for efficient sound-absorbing based on sustainable and flame retardant jute fabrics10.1177/15280837221098197 ↗
10. Study on audiometer calibration at the extended high frequency range 8–16 kHz10.1177/09574565211052691 ↗
11. Calibration and uncertainty estimation for the reference sound source in reverberation room
12. Locally resonant sonic materials10.1126/science.289.5485.1734 ↗
13. Mui-large low-frequency band gaps in a periodic hybrid structure10.1142/s0217984916501116 ↗
14. Hybrid pghononic crystal plates for lowering and widening acoustic band gaps10.1016/j.ultras.2014.06.008 ↗
15. Periodic co-continuous acoustic metamaterials with overlapping locally resonant and Bragg band gaps10.1063/1.4902129 ↗
16. Composite media mixing Bragg and local resonances for highly attenuating and broad bandgaps10.1038/srep03240 ↗
17. Coupling local resonance with Bragg band gaps in single-phase mechanical metamaterials10.1016/j.eml.2016.10.004 ↗
18. Design of vibration isolators by using the Bragg scattering and local resonance band gaps in a layered honeycomb meta-structure10.1016/j.jsv.2021.116721 ↗
19. Interaction of Bragg scattering bandgaps and local resonators in mono-coupled periodic structures10.1063/5.0038438 ↗
20. Broadband high-efficiency meta-structures design by acoustic critical absorption effect10.1016/j.apacoust.2022.109063 ↗
21. Band gaps and transmission characteristics analysis on a two-dimensional multiple-scatter10.3390/ma13092106 ↗
22. Multiple low-frequency broad band gaps generated by a phononic crystal of periodic circular cavity sandwich plates10.1016/j.compstruct.2017.05.048 ↗