Bandwidth broadening in cavity-type sound-absorbing metamaterials via additional equivalent stiffness [PDF]
Scientific ReportsThe fixed acoustic characteristics of unit-cell cavities fundamentally limit the broadband sound absorption performance of cavity-type sound-absorbing metamaterials.
Li Bo Wang, Jiu Hui Wu, Jun Fu Zhang
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Numerical Absorbing Boundary Conditions Based on a Damped Wave Equation for Pseudospectral Time-Domain Acoustic Simulations [PDF]
The Scientific World Journal, 2014 In the context of wave-like phenomena, Fourier pseudospectral time-domain (PSTD) algorithms are some of the most efficient time-domain numerical methods for engineering applications.
Carlos Spa +2 more
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On the Accuracy of Some Absorbing Boundary Conditions for the Schrodinger Equation
Mathematical Modelling and Analysis, 2017 A detailed analysis of absorbing boundary conditions for the linear Schrodinger equation is presented in this paper. It is focused on absorbing boundary conditions that are obtained by using rational functions to approximate the exact transparent ...
Andrej Bugajev +4 more
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Compressed Absorbing Boundary Conditions via Matrix Probing [PDF]
SIAM Journal on Numerical Analysis, 2015 29 pages with 25 ...
Belanger-Rioux, R., Demanet, Laurent
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Absorbing boundary conditions for nonlinear acoustics: The Westervelt equation
Journal of Computational Physics, 2015 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Igor Shevchenko, Barbara Kaltenbacher
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Effectiveness and computational efficiency of absorbing boundary conditions for full-waveform inversion [PDF]
Geoscientific Model Development, 2022 Full-waveform inversion (FWI) is a high-resolution numerical technique for seismic waves used to estimate the physical characteristics of a subsurface region.
D. I. Dolci +3 more
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Echoes and glimpses of a distant drum [PDF]
Opuscula Mathematica, 2020 To what extent does the spectrum of the Laplacian operator on a domain \(D\) with prescribed boundary conditions determine its shape? This paper first retraces the history of this problem, then Kac's approach in terms of a diffusion process with ...
John Wm. Turner
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Dynamic Analysis of Foundations on Saturated Clay Using an Energy Absorbing Layer [PDF]
Engineering and Technology Journal, 2011 In this study, a method to model the semi-infinite extension (unbounded domain) of the saturated soil is developed. In this method, the unbounded domain is replaced by an absorbing layer of finite thickness with properties that appreciably reduce the ...
Saad F. A. Al-Wakel +2 more
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Absorbing Boundary Conditions for Rayleigh Waves [PDF]
SIAM Journal on Scientific and Statistical Computing, 1988 The first-order absorbing boundary conditions for elastic waves are transparent for P and S waves at normal incidence, but give rise to parasitic reflections of Rayleigh waves. To treat these phenomena, a solution of geometric type is proposed that eliminates these parasitic waves but causes others to appear, which, while less important, are still ...
Bamberger, Alain +4 more
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Journal of Applied Mathematics, 2022 We propose a method of defining absorbing boundary conditions for use in finite element modeling of mechanoacoustic systems. The finite element model of an elastic body is expanded by a water domain, bounded by an axisymmetric surface, to which boundary ...
Mikhail B. Salin +4 more
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