A5103118335- Acoustic Wave Phenomena Research
- Superconducting Materials and Applications
- Topology Optimization in Engineering
- Particle Accelerators and Free-Electron Lasers
- Ultrasonics and Acoustic Wave Propagation
- Acoustic Wave Resonator Technologies
- Antenna Design and Analysis
- Engineering Applied Research
- Metamaterials and Metasurfaces Applications
- Superconducting and THz Device Technology
Anhui Jianzhu University
2023
Abstract In this paper, a method is theoretically proposed to obtain novel movable second-order Helmholtz resonator by adding perforated plate inside the cavity of that can be freely tuned up and down. Through software simulation, it concluded meets design objective saving production costs so when manufactured physical object required change structural parameters, only needs dynamically adjusted on basis, rather than reproduce new with parameters. Meanwhile, has excellent acoustic...
Abstract In this paper, a simple curled G-type structure is used as the basic unit, which coded according to its different opening directions, and composite model with special acoustic functions constructed by types of assembly methods. The G-structure unit has characteristics Helmholtz resonator, can resonate at specific frequency effectively attenuate energy. matrix assembly, there exists an optimal ultra-wide forbidden bandwidth 510-2120Hz, also high degree symmetry bandgap phononic...
The special structural design of acoustic metamaterials further extends properties the materials. We a tunable passive phased array based on double-opening resonant rings, which modulates waves only by rotational angle, making up for defect fixed structure ordinary metamaterials. rotation angle is selected generalized Snell’s law, not enables focusing in large frequency band range but also meets demand incident at different angles and controls position focal point.