A5049619483- Acoustic Wave Phenomena Research
- Cellular and Composite Structures
- Metamaterials and Metasurfaces Applications
- Noise Effects and Management
- Aerodynamics and Acoustics in Jet Flows
- Wind and Air Flow Studies
- Vehicle Noise and Vibration Control
- Antenna Design and Analysis
- Aerodynamics and Fluid Dynamics Research
- Ultrasonics and Acoustic Wave Propagation
- Railway Engineering and Dynamics
- Vibration Control and Rheological Fluids
- Advanced Antenna and Metasurface Technologies
- Hearing Loss and Rehabilitation
- Polymer composites and self-healing
- Vibration and Dynamic Analysis
- Structural Health Monitoring Techniques
- Fluid Dynamics and Vibration Analysis
- Advanced Sensor Technologies Research
- Structural Load-Bearing Analysis
- Aerogels and thermal insulation
- Atherosclerosis and Cardiovascular Diseases
- Aerosol Filtration and Electrostatic Precipitation
- Advanced Sensor and Control Systems
- Natural Fiber Reinforced Composites
Nanjing University of Aeronautics and Astronautics
2022-2025
Xi'an Institute of Optics and Precision Mechanics
2024
Northumbria University
2020-2023
Tianjin Medical University General Hospital
2023
University of Nottingham
2019-2022
Xi'an Jiaotong University
2012-2019
École Centrale de Lyon
2017-2019
Laboratoire de Tribologie et Dynamique des Systèmes
2017-2019
Laboratoire de Mécanique des Fluides et d'Acoustique
2017-2019
Université Claude Bernard Lyon 1
2017-2019
Abstract A hybrid acoustic metamaterial is proposed as a new class of sound absorber, which exhibits superior broadband low-frequency absorption well excellent mechanical stiffness/strength. Based on the honeycomb-corrugation core (H-C core), we introduce perforations both top facesheet and corrugation, forming perforated (PHCH) to gain super absorption. Applying theory micro-perforated panel (MPP), establish theoretical method calculate coefficient this kind metamaterial. Perfect found at...
Abstract Recent advances in additive manufacturing have enabled fabrication of phononic crystals and metamaterials which exhibit spectral gaps, or stopbands, the propagation elastic waves is prohibited by Bragg scattering local resonance effects. Due to high level design freedom available manufacturing, properties are tunable through periodic cell. In this paper, we outline a new approach for incorporating internal resonators, provide numerical experimental evidence that stopband exists over...
We report a new type of three-dimensional architected polymer foams composed perforated spherical shells and flat strut connectors, which can be precisely produced by 3D printing techniques. investigate the effects foam architectures, manufacturing process, constitutive material on deformation patterns failure modes proposed foams. demonstrate that connectors offer unprecedented design flexibility for controlling mechanical performance. By tuning geometric parameter stiffness increase about...
Structures with light weight and broadband sound absorption is of vital importance for noise control applications in engineering practice. Foams exhibit but poor low frequency absorption, micro-perforated sandwich structures conversely possess good at frequencies due to resonance, the bandwidth however limited. Micro-perforated foam filling are therefore proposed paper obtain wideband low-frequency absorption. An integrated analytical, numerical experimental research conducted investigate...
The noise issues brought about by the development of aviation and other industries have put forward an urgent demand for design low-frequency reduction structures. An autoencoder artificial neural network (ANN) is established in this paper to achieve accelerated low-cost on locally resonant metamaterials simultaneously. Inspired framework network, proposed ANN composed series connected inverse prediction a module avoid program errors multisolution problems. A theoretical model first set up...
An ultrathin (subwavelength) hierarchy multi-slit metamaterial with simultaneous negative effective density and compressibility is proposed to absorb sound over a wide frequency range. Different from conventional acoustic metamaterials having only real parts of parameters, the imaginary are both for metamaterial, which result in superior viscous thermal dissipation energy. By combining slit theory absorption double porosity porous media, theoretical model developed investigate performance...
Abstract We hereby report for the first time on design, manufacturing and testing of a three-dimensional (3D) nearly-periodic, locally resonant phononic crystal (PnC). Most research effort PnCs metamaterials has been focused enhanced dynamic properties arising from their periodic design. Lately, additive techniques have made number designs with intrinsically complex geometries feasible to produce. These recent developments led innovative solutions broadband vibration attenuation, multitude...
Metamaterials with multiple resonators have been widely investigated for the purpose of generating stop bands or broadening attenuation bandwidth. The could be connected end to in a line, namely, in-series connection, individually host structures, in-parallel connection. This paper investigates influence resonator connection methodology on frequency response functions metamaterial beams and exhibits an approach optimizing their distribution over structure. receptance various architectures...
A theoretical model is developed to investigate the influence of external mean flow on sound transmission through an infinite double-leaf panel filled with porous absorptive materials. The process in material described by using equivalent fluid model, while fluid-structure coupling conditions are employed ensure displacement continuity at interfaces. In order verify predictions compared existing experimental results. Numerical investigations subsequently performed quantify how a set...
Phononic crystals (PnCs) and metamaterials are widely investigated for vibration suppression owing to the bandgaps, within which, wave propagation is prohibited or attenuation level above requirements. The application of PnCs is, however, limited by widths bandgaps. recently developed rainbow structures consisting spatially varied profiles have been shown generate wider bandgaps than periodic structures. Inspired this design strategy, composed nonperiodic mass blocks in two-dimensional (2D)...