A5103022286- Acoustic Wave Phenomena Research
- Metamaterials and Metasurfaces Applications
- Aerodynamics and Acoustics in Jet Flows
- Nonlinear Photonic Systems
- Noise Effects and Management
- Ultrasonics and Acoustic Wave Propagation
- Magnetic confinement fusion research
- Microfluidic and Bio-sensing Technologies
- Urologic and reproductive health conditions
- Electrical Fault Detection and Protection
- Recycled Aggregate Concrete Performance
- Numerical methods in engineering
- VLSI and Analog Circuit Testing
- Experimental and Theoretical Physics Studies
- Superconducting Materials and Applications
- Orbital Angular Momentum in Optics
- Advanced Antenna and Metasurface Technologies
- Advanced Sensor Technologies Research
- Coastal and Marine Dynamics
- Hearing Loss and Rehabilitation
- Composite Structure Analysis and Optimization
- Testicular diseases and treatments
- Geomechanics and Mining Engineering
- Sports Dynamics and Biomechanics
- Vacuum and Plasma Arcs
Yanshan University
2021-2024
Jining Traditional Chinese Medicine Hospital
2024
China Tobacco
2024
Beijing Institute of Technology
2015-2021
China Aerodynamics Research and Development Center
2021
Xi'an Jiaotong University
2018
Hunan University of Science and Technology
2015-2016
Shanxi Agricultural University
2012
Huazhong University of Science and Technology
2006
Abstract The Chinese Fusion Engineering Testing Reactor (CFETR) plans to use an ITER-type antenna and couple ∼30 MW ion cyclotron range of frequencies (ICRF) power the plasma. In this paper, physical design a CFETR in midplane port is carried out. Parameter scans were performed study optimized toroidal poloidal numbers straps as well geometric sizes straps. coupling resistance, spectrum, maximum voltage resonant transmission line strap parallel electric field vicinity are used determine...
We have proposed solid elastic metamaterials with anisotropic stiffness and inertial mass simultaneously, denoted as the dual anisotropy, for potential use of wave controlling. The anisotropy has been designed weakly dispersive in a broad frequency range, wherein broadband is achieved by employing sliding-interface concept fluid-solid composites. Results validated through band-structure, effective-medium, modal-field analyses. further found that metamaterial, when its shear diminished until...
We investigate the interaction between a positive mass and negative effective through three-mass chain connected with elastic springs, pair of masses is designed to have an mass, it interacts third one as if equivalent two-mass chain. The dynamics shows that two bodies may be self-accelerated in same direction when becomes negative, experiment also conducted demonstrate this type motion. further show energy principle (Hamilton's principle) applicable unit properly characterized. result...
We theoretically and numerically propose an open bend tunnel with the capability of realizing ultra-broadband unidirectional transmission. The designed can isolate acoustic wave incidence from opposite directions substance like fluids or objects exchange freely by employing gradient metasurface. underlying mechanism is due to apparent negative reflection in frequency range when incoming angle impinging on metasurface over critical incidence. numerical results keep a good agreement...
In this paper, we report on a detailed investigation of the vacuum arc characteristic under axial magnetic field. Through experiment observed morphological changes in and column constriction near anode. With simulation field between contacts, influence current, contact diameter distance was analysed. We also summarize duration constricted arc, threshold current at moment when mode changed. The results paper could provide information benefit to theoretical research arcs product development.
We present a low-frequency sound-absorbing metamaterial for underwater applications and verify that its coefficient reaches above 0.7 within 45 to 300 Hz bandwidth remains more than 0.9 110 by finite element method.The unit structure consists of five groups conical cylindrical cavities, rubber matrix, two metal vibrators steel backing.We first analyze the high sound absorption performance this at is result mechanisms local resonance wave-mode transformation.The method results prove good...
A new type of all-solid metamaterial model with anisotropic density and fluid-like elasticity is proposed for controlling acoustic propagation in an underwater environment. The consists a regular hexagonal lattice as the host that defines overall isotropic stiffness, which all beams have been sharpened at both ends to significantly diminish shear resistance. inclusion structure, involves epoxy, rubber, lead material constituents, designed attain large density–anisotropy ratio broad frequency...
Based on heat conduction equation and thermoelasticity theory, thermal–mechanical coupling model solution method of finite element are established for aluminium welding. The combination the experimental measurement simulation to welding temperature field is done achieve selection source parameters. effective heating radius Gaussian under given parameters determined, which corresponding results inputted calculation stress strain fields. distribution driving force curve solidification crack...
The propagation characteristic of guided waves is important to acoustic emission nondestructive detection for the structural integrity engineering components. finite element method introduced study in plate structure with different materials, cracks and coating metal. displacement contours wave curve at receiving positions are examined first characteristics homogeneous material steel 45 GCr15. Next, interface reflection, refraction diffraction metal aluminium 2024 investigated. Finally,...
Acoustic emission signal is a kind of elastic wave which caused by the release internal energy materials when structure changes. The propagation characteristics acoustic important to testing technology signal. finite element method introduced analyze in plate article, mainly contains discretization techniques area and time domain. with different ,style coating metal are selected simulation, displacement contours curve resulted from simulation used interface reflection, refraction diffraction...
In order to better understand the recycled concrete aggregate, it is essential investigate different mixture ratio in it. For determining of experimental investigation was conducted by making use aggregate instead small stones concrete, while maintaining proportion other raw materials unchanged. Its mechanical properties were also investigated. It found that sand: aggregate: water= 1: 1.8 : 2.1: 0.55.
Micro/nanoliter droplet is capable of achieving versatile applications with tiny volume and substantial surface energy, which a big plus over bulk liquid. Yet, the contradiction elaborate manipulation enough power still challenge. Here, we unleash potential our miniwatt aspirators pumping up liquid creating droplets help acoustic vortex beams, inspired by mechanism that spirals are significant for most mollusks live in water. These produce very large interface deformations small radiation...
Abstract A stereo PIV technique is utilized for the analysis of flow field over a 70° delta wing. Instantaneous velocity vectors are measured at series stations in chordwise direction. The angle attack from 0° to 45° investigated with free stream velocities 20, 30, 40, 50 and 60 m/s, respectively. measurements conducted small-sized subsonic wind tunnel (1.8m×1.4m) China Areodynamics Research Development Center (CARDC) compared previously obtained PSP results. comparison shows good agreement...