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Wyszukujesz frazę "cylindrical baffle" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Radiation Impedance for Square Piston Sources on Infinite Circular Cylindrical Baffles
Autorzy:
Valacas, John L.
Powiązania:
https://bibliotekanauki.pl/articles/1953533.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
cylindrical baffle
radiation impedance
radiation mass-load
piston source
Opis:
The evaluation of complex radiation impedance for a square piston source on an infinite circular-cylindrical baffle is associated to the Greenspon-Sherman formulation for which novel evaluation methods are proposed. Unlike existing methods results are produced in a very wide range of frequencies and source semi-angles with controllable precision. For this reason closed-form expressions are used to describe the truncation errors of all integrals and infinite sums involved. Impedance values of increased accuracy are also provided in tabulated form for engineering use and a new radiation mass-load model is derived for low-frequencies.
Źródło:
Archives of Acoustics; 2020, 45, 4; 663-679
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Acoustic Impedance of a Vibrating Annular Piston Located on a Flat Rigid Baffle Around a Semi-Infinite Circular Rigid Cylinder
Autorzy:
Rdzanek, W. P.
Rdzanek, W. J.
Pieczonka, D.
Powiązania:
https://bibliotekanauki.pl/articles/176618.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Neumann boundary value problem
annular piston
acoustic impedance
semi-infinite cylindrical circular rigid baffle
Opis:
The axisymmetric problem of acoustic impedance of a vibrating annular piston embedded into a flat rigid baffle concentrically around a semi-infinite rigid cylindrical circular baffle has been undertaken in this study. The Helmholtz equation has been solved. The Green’s function valid for the zone considered has been used for this purpose. The influence of the semi-infinite cylindrical baffle on the piston’s acoustic impedance has been investigated. The acoustic impedance has been presented in both forms: integral and asymptotic, both valid for the steady harmonic vibrations. Additionally, the acoustic impedances of the piston with and without the cylindrical baffle have been compared to one another. In the case without the cylindrical baffle some earlier results have been used.
Źródło:
Archives of Acoustics; 2012, 37, 4; 411-422
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculations of Electric Fields of Circular Screened Systems, Generated from Cylindrical Piezoceramic Radiators
Autorzy:
Leiko, Aleksandr
Derepa, Anatolii
Rasstrygin, Aleksandr
Kosiakovskyi, Andrii
Kocharian, Oksana
Starovoit, Yaroslav
Powiązania:
https://bibliotekanauki.pl/articles/176548.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
electric fields
circular system with baffle
piezoceramic cylindrical radiator
circular polarization
Opis:
Analytical relations, describing the electrical fields of cylindrical piezoceramic radiators with circular polarization as a member of the cylindrical systems with the baffle in the inner cavity, using the related fields method in multiply connected regions were obtained. Comparative analysis of the results of numerical experiments performed on the frequency characteristics of the electric field of the radiating systems for different modes of radiation allow to establish a number of subtle effects of the formation of the electric field of radiators.
Źródło:
Archives of Acoustics; 2019, 44, 1; 129-135
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Liquid vibrations in cylindrical tanks with and without baffles under lateral and longitudinal excitations
Autorzy:
Strelnikova, E.
Kriutchenko, D.
Gnitko, V.
Tonkonozhenko, A.
Powiązania:
https://bibliotekanauki.pl/articles/1839815.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
zbiornik cylindryczny
drgania swobodne
rezonans parametryczny
sloshing
cylindrical tank
baffle
free vibrations
forced vibrations
parametric resonance
boundary element method
Ince-Strutt diagram
Opis:
The paper is devoted to issues of estimating free surface elevations in rigid cylindrical fluid-filled tanks dunder external loadings. The possibility of baffles installation is provided. The liquid vibrations caused by lateral and longitudinal harmonic loadings are under consideration. Free, forced and parametrical vibrations are examined. Modes of the free liquid vibrations are considered as basic functions for the analysis of forced and parametric vibrations. The modes of the free liquid vibrations in baffled and un-baffled cylindrical tanks are received by using single-domain and multi-domain boundary element methods. Effects of baffle installation are studied. The problems of forced vibrations are reduced to solving the systems of second order ordinary differential equations. For parametric vibrations the system of Mathieu equations is obtained. The numerical simulation of free surface elevations at different loadings and baffle configurations is accomplished. Beat phenomena effects are considered under lateral harmonic excitations. The phenomenon of parametric resonance is examined under longitudinal harmonic excitations.
Źródło:
International Journal of Applied Mechanics and Engineering; 2020, 25, 3; 117-132
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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