Zobrazeno 1 - 10
of 274
pro vyhledávání: '"Jiu hui Wu"'
Publikováno v:
Communications Physics, Vol 7, Iss 1, Pp 1-10 (2024)
Abstract Acoustic vortices (AVs) carry orbital angular momentum (OAM), showing great promise in advancing communication, biomedicine, and metrology. An ideal OAM generation method that realizes the tunability of AV topological charge and working freq
Externí odkaz:
https://doaj.org/article/291c72ec94364ccfb6cf7cc82ff818de
Publikováno v:
APL Materials, Vol 11, Iss 10, Pp 101122-101122-10 (2023)
We present an ultra-broadband acoustic metamaterial with inhomogeneous high-order Fabry–Pérot (FP) resonances that achieves near-perfect continuous absorption in the range of 400–10000 Hz. The unit is composed of multiple FP channels with inhomo
Externí odkaz:
https://doaj.org/article/754316e84bc04696b1a6aa64a8be4c78
Publikováno v:
Applied Physics Express, Vol 17, Iss 8, p 084001 (2024)
We proposed a tunable high-order micro-perforated panel metamaterial for broadband absorption, in which the energy dissipation modes is reconstructed by the cavity partition plates. Owing to the more degrees of freedom in impedance design, the metama
Externí odkaz:
https://doaj.org/article/3e7ea8a31f1242898bfd9b3c36401f00
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 14, Iss 1, Pp 351-366 (2020)
How to theoretically describe the process of turbulence formation emains an unsolved problem. A new method is presented in this paper for quantitatively researching the turbulence phase transition based on a dimensionless method and catastrophe theor
Externí odkaz:
https://doaj.org/article/c5c7d52ebf914303aa9e007e33bb70cc
Publikováno v:
AIP Advances, Vol 11, Iss 10, Pp 105004-105004-8 (2021)
In this paper, a Multiphysics coupling simulation model of flow and acoustics is proposed using COMSOL software, and its results are verified by comparing with experimental results of others. Then, the aerodynamic pressure above the bluff body surfac
Externí odkaz:
https://doaj.org/article/4cda94fa270a4831ae90a76d909da770
Autor:
Feng Guo, Jiu Hui Wu
Publikováno v:
Journal of Low Frequency Noise, Vibration and Active Control, Vol 40 (2021)
For interfacial stratification mechanism of sandwich plate structures, the forced propagation solution of interface shear stress excited by SH waves is derived by global matrix methods and integral transformation methods. The necessary condition of i
Externí odkaz:
https://doaj.org/article/6da9171d58ff4fae8cd3b1dbc0357c87
Autor:
Feng Guo, Jiu Hui Wu
Publikováno v:
Advances in Mechanical Engineering, Vol 13 (2021)
The forced propagation solution of interfacial shear stress of multilayer cladding structure excited by Love waves is derived by the integral transformation method, and the shear resonance mechanism of interfacial separation is further revealed. The
Externí odkaz:
https://doaj.org/article/b89238aea2224507a84809bf02116945
Publikováno v:
AIP Advances, Vol 6, Iss 2, Pp 025116-025116-10 (2016)
A novel membrane-type acoustic metamaterial with a high sound transmission loss (STL) at low frequencies (⩽500Hz) was designed and the mechanisms were investigated by using negative mass density theory. This metamaterial’s structure is like a san
Externí odkaz:
https://doaj.org/article/d1a3a5bfcdbe4aa39c42a4c124730896
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. 237:843-858
Low-frequency wideband noise reduction has posed a significant problem to the scientific and technical communities in recent years. A single layer of a parallel-arranged inhomogeneous micro-perforated panel (iMPP) coupled with spider-web designed cav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0eac70ee98ed4ef56aa8ffba3e240f0a
https://doi.org/10.1177/14644207221126810
https://doi.org/10.1177/14644207221126810
Publikováno v:
Advanced Materials Technologies.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e23feb4910a25f355dd55ee305fd62a
https://doi.org/10.1002/admt.202202082
https://doi.org/10.1002/admt.202202082