Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Ivan V Andronov"'
Autor:
Ivan V Andronov
This book presents the idea of zero-range potentials and shows the limitations of the point models used in structural mechanics. It also offers specific examples from the theory of generalized functions, regularization of super-singular integral equa
Autor:
Ivan V. Andronov
Publikováno v:
Acta Acustica united with Acustica. 105:912-917
The problem of diffraction of a high-frequency point source acoustic field by an infinite elliptic cylinder with a strongly elongated cross-section is studied. At every direction of propagation, the solution is shown to be similar to those of a linea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3b807c1c12fe1fa01bce8f6b33e2040
https://doi.org/10.3813/aaa.919372
https://doi.org/10.3813/aaa.919372
Autor:
Ivan V. Andronov
Publikováno v:
Acoustical Physics. 65:335-339
A high-frequency diffraction problem is considered for a Gaussian beam incident parallel to the axis of a strongly elongated spheroid. The parabolic equation method in spheroidal coordinates is used to construct the leading order term of the field as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18d0f17709eee6159ab3474d68b10247
https://doi.org/10.1134/s1063771019040018
https://doi.org/10.1134/s1063771019040018
Autor:
Frédéric Molinet, Ivan V. Andronov
Publikováno v:
Advances in Mathematical Methods for Electromagnetics ISBN: 9781785613845
In this chapter, we apply the function theoretic methods developed by Andronov to calculate the asymptotic currents on elliptic cylinders with a strongly elongated cross-section to more general cylindrical configurations where the cross-section is a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8f0d15e83d47ce6f9008d6a3bed388f
https://doi.org/10.1049/sbew528e_ch6
https://doi.org/10.1049/sbew528e_ch6
Autor:
Ivan V. Andronov
Publikováno v:
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science.
The paper examines the model problem of high-frequency diffraction by a convex surface consisting of two parts. One is soft, the other is hard. The incident wave falls at a small angle to the line which separates soft and hard parts of the surface. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::051ecef2e2dc8d680c9fe7b6d9acf100
https://doi.org/10.23919/ursigass49373.2020.9232357
https://doi.org/10.23919/ursigass49373.2020.9232357
Publikováno v:
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science.
A fast solver based on the multilevel nonuniform grid approach and an asymptotic approximation designed for scattering by strongly elongated spheroids are mutually validated. Good agreement between the numerical and asymptotic solutions is observed o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e89a4b45949120c6dd876116ddf394bc
https://doi.org/10.23919/ursigass49373.2020.9231997
https://doi.org/10.23919/ursigass49373.2020.9231997
Autor:
Ivan V. Andronov
Publikováno v:
Journal of Electromagnetic Waves and Applications. 32:2321-2338
This review reports on some progress in high-frequency diffraction by smooth surfaces. Specific effects related to the special cases of the impedance boundary conditions and the effects that take p...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54860c43cc3498d777c1d81653b150e7
https://doi.org/10.1080/09205071.2018.1500950
https://doi.org/10.1080/09205071.2018.1500950
Autor:
Ivan V. Andronov
Publikováno v:
Journal of Electromagnetic Waves and Applications. 32:1535-1540
Axial diffraction of a dipole source on an elongated perfectly conducting spheroid is considered in high-frequency asymptotic approximation in a uniform manner with respect to the rate of e...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a3d4a6402436f880b6bbc3eaa8aa493
https://doi.org/10.1080/09205071.2018.1451395
https://doi.org/10.1080/09205071.2018.1451395
Autor:
Ivan V. Andronov, Boris P. Belinskiy
Publikováno v:
Journal of Mathematical Analysis and Applications. 456:1176-1202
Previously, the parabolic equation method was used to study the high-frequency acoustic diffraction by a strongly elongated spheroid. This paper represents a continuation of that study. We justify some formal steps of the parabolic equation method at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6dc8eae6ca8a89489f02d654961c723
https://doi.org/10.1016/j.jmaa.2017.07.029
https://doi.org/10.1016/j.jmaa.2017.07.029
Autor:
Ivan V. Andronov
Publikováno v:
Journal of Mathematical Sciences. 226:695-700
The scalar problem of plane wave diffraction by a narrow cone is considered. The angle of the cone α and the angle of incidence are assumed to be small, and the field is studied in a boundary layer near the surface at distances z from the cone tip s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7152f5cf7073cecde2935a52d8fb56d0
https://doi.org/10.1007/s10958-017-3558-2
https://doi.org/10.1007/s10958-017-3558-2