A5008284609- Acoustic Wave Phenomena Research
- Metamaterials and Metasurfaces Applications
- Cellular and Composite Structures
- Aerodynamics and Acoustics in Jet Flows
- Innovative Energy Harvesting Technologies
- Music Technology and Sound Studies
- Vibration Control and Rheological Fluids
- Fluid Dynamics Simulations and Interactions
- Automotive and Human Injury Biomechanics
- Underwater Acoustics Research
- Antenna Design and Analysis
- Electrospun Nanofibers in Biomedical Applications
- Topological Materials and Phenomena
- Vibration and Dynamic Analysis
- Noise Effects and Management
Xi'an Jiaotong University
2020-2024
Abstract A sound-absorbing metasurface with a multi-slit synergetic resonant effect was studied that can achieve broadband sound absorption in range betwen 500 Hz and 1150 by using nested doll supercell thickness of only 44.1 mm (the being one sixteenth the wavelength). The basic unit improved micro-slit absorber (IMSA), made designing slit as type step locating it at edge surface panel, is proposed for lower frequencies. not change structure’s impedance to match medium air frequency, but...
In this paper, the metamaterial force-chain concept is proposed, for first time to our knowledge, describe stress distribution and crushing property of honeycomb materials under quasi-static compression. A novel force-chain-enhanced re-entrant (FCERH) behavior put forward through experiments simulations, which forms a rhombic force chain when compressed, different from traditional (REH). It compares in detail effects changing on properties materials, including plateau stress, Poisson’s...
Abstract Quasi-zero-stiffness (QZS) structures play an important role in ultra-low frequency vibration isolation due to its nonlinear mechanical properties, how make it more lightweight while ensuring performance is research topic expanding application areas. In this paper, integrated QZS metamaterial element for (around 4Hz). Relying on the properties of metamaterials, initial structural parameters are optimized achieve within a specific deformation range, providing theoretical analysis...
Abstract Broadband sound energy enhancement is essential in practical scenarios, such as acoustic positioning and communication. In this paper, a dual anisotropic metamaterial composed of an inner Mie resonator outer grating proposed, aiming to achieve enhanced broadband monopole emission harvesting (AEH) via the coupling first second resonances. Considering thermo-viscous dissipation, numerical simulations experimental results demonstrate that can realize omnidirectional at 795 Hz–1511 Hz,...
In this paper, the metamaterial force chain concept is proposed, for first time to our knowledge, describe stress distribution and crushing property of honeycomb materials under quasi-static compression. A novel force-chain-enhanced re-entrant (FCERH) behavior put forward through experiments simulations, which forms a rhombic when compressed, different from traditional (REH). It compared in details that effects changing on properties materials, including plateau stress, Poisson’s ratio,...
Abstract An extreme anisotropic metamaterial consisting of one central cavity, eight zigzag and straight channels is proposed, aiming to achieve acoustic emission enhancement self-centering effect. By placing a monopole source in the center metamaterial, can be achieved through resonance resonances. Theory simulation confirm effect proposed that is, when sources are placed away from external sound field still regarded as uniform generated by center.