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pro vyhledávání: '"Wirgin, A"'
Autor:
Wirgin, Armand
Three types of boundary integral equation (BIE) methods are employed to obtain closed-form solutions of a wave-scattering problem which are compared to the exact, closed-form (reference), solution deriving from the separation-of-variables technique.
Externí odkaz:
http://arxiv.org/abs/2012.10989
Autor:
Wirgin, Armand
The problem of the response of a cylindrical protuberance of rectangular shape to a SH seismic plane wave is studied in parametric manner so as to provide answers to the questions: (i) where and how should one measure this response, (ii) is the norma
Externí odkaz:
http://arxiv.org/abs/2003.00461
Autor:
Wirgin, Armand
We show theoretically what is meant by the term '(surface shape) resonance' in connection with the seismic response of a protuberance (emerging from flat ground) such as a hill or mountain of arbitrary shape. We address the specific problem of cylind
Externí odkaz:
http://arxiv.org/abs/2002.00389
Autor:
Wirgin, Armand
We establish the equations which translate a conservation law for the problem of the seismic response of an above-ground structure (e.g., building, hill or mountain) of arbitrary shape and inquire whether both the implicit (formal) and explicit (nume
Externí odkaz:
http://arxiv.org/abs/2001.07687
Autor:
Wirgin, Armand
We establish the abstract and semi-abstract equations that translate the conservation law for a totally-filled, or totally-empty basin of arbitrary shape submitted to a SH plane seismic body wave. This law states that the input flux is equal to the s
Externí odkaz:
http://arxiv.org/abs/1911.11425
Autor:
Wirgin, Armand
This investigation is concerned with the 2D acoustic scattering problem of a plane wave propagating in a non-lossy fluid host and soliciting a linear, isotropic, macroscopically-homogeneous, lossy, flat-plane layer in which the mass density and waves
Externí odkaz:
http://arxiv.org/abs/1904.13359
Autor:
Wirgin, Armand
In 2D acoustic and elastodynamic problems the spatial variability of a constitutive parameter such as the mass density makes it difficult to employ boundary integral and domain integral techniques to solve the forward and inverse wave scattering prob
Externí odkaz:
http://arxiv.org/abs/1903.09573
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Akademický článek
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Incorporation of macroscopic heterogeneity within a porous layer to enhance its acoustic absorptance
Autor:
Wirgin, Armand
We seek the response, in particular the spectral absorptance, of a rigidly-backed periodically-(in one horizontal~~ direction) ~inhomogeneous ~layer ~composed ~of ~alternating rigid and macroscopically-homogeneous porous portions, submitted to an air
Externí odkaz:
http://arxiv.org/abs/1810.02101