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Wyszukujesz frazę "surface waves" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Surface waves in non-homogeneous, general magnetothermo, viscoelastic media of higher order
    Autorzy:
    Sethi, M.
    Gupta, K. C.
    Rani, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/955273.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    fale powierzchniowe
    lepkość
    lepkosprężystość
    inhomogeneous media
    variable density
    surface waves
    viscosity
    Opis:
    The aim of the present paper is to investigate surface waves in a non-homogeneous, isotropic, visco-elastic solid medium of n-th order including the time rate of strain. The theory of generalised surface waves has firstly been developed and then it has been employed to investigate particular cases of waves, viz., Stoneley, Rayleigh and Love type. The wave velocity equations have been obtained for different cases and are in well agreement with the corresponding classical result, when the effects of viscosity, temperature, magnetism as well as nonhomogeneity of the material medium are ignored.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 4; 1221-1236
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface waves in fibre-reinforced anisotropic solid elastic media under the influence of gravity
    Autorzy:
    Sethi, M.
    Gupta, K. C.
    Gupta, D.
    Manisha, -
    Powiązania:
    https://bibliotekanauki.pl/articles/955330.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    fale powierzchniowe
    lepkość
    fala Rayleigha
    siła ciężkości
    fibre-reinforced medium
    surface waves
    viscosity
    Rayleigh waves
    gravity
    Opis:
    The aim of the present paper is to investigate surface waves in an anisotropic, elastic solid medium under the influence of gravity. First, a theory of generalised surface waves was developed and then it was employed to investigate particular cases of waves, viz., Stoneley and Rayleigh, Love type. The wave velocity equations were obtained for different cases and they are in well agreement with the corresponding classical result, when the effect of gravity, viscosity as well as parameters for fibre-reinforcement of the material medium are ignored.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 1; 177-188
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical modeling of torsional surface wave propagation in a non-homogeneous transverse isotropic elastic solid semi-infinite medium under a layer
    Autorzy:
    Sethi, M.
    Sharma, A.
    Vasishth, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/265089.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    non-homogeneous media
    torsional surface waves
    rigidity
    fala powierzchniowa
    propagacja fal
    modelowanie matematyczne
    Opis:
    The present paper deals with the mathematical modeling of the propagation of torsional surface waves in a non-homogeneous transverse isotropic elastic half-space under a rigid layer. Both rigidities and density of the half-space are assumed to vary inversely linearly with depth. Separation of variable method has been used to get the analytical solutions for the dispersion equation of the torsional surface waves. Also, the effects of nonhomogeneities on the phase velocity of torsional surface waves have been shown graphically. Also, dispersion equations have been derived for some particular cases, which are in complete agreement with some classical results.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2017, 22, 2; 415-426
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On propagation of Rayleigh type surface wave in five different theories of thermoelasticity
    Autorzy:
    Singh, B.
    Verma, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/265155.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    termoelastyczność
    fala powierzchniowa
    fala Rayleigha
    równanie częstotliwości
    generalized thermoelasticity
    surface waves
    Rayleigh wave
    frequency equation
    Opis:
    The governing equations for a homogeneous and isotropic thermoelastic medium are formulated in the context of coupled thermoelasticity, Lord and Shulman theory of generalized thermoelasticity with one relaxation time, Green and Lindsay theory of generalized thermoelasticity with two relaxation times, Green and Nagdhi theory of thermoelasticity without energy dissipation and Chandrasekharaiah and Tzou theory of thermoelasticity. These governing equations are solved to obtain general surface wave solutions. The particular solutions in a halfspace are obtained with the help of appropriate radiation conditions. The two types of boundaries at athe surface of a half-space are considered namely, the stress free thermally insulated boundary and stress free isothermal boundary. The particular solutions obtained in a half-space satisfy the relevant boundary conditions at the free surface of the half-space and a frequency equation for the Rayleigh wave speed is obtained for both thermally insulated and isothermal cases. The non-dimensional Rayleigh wave speed is computed for aluminium metal to observe the effects of frequency, thermal relaxation time and different theories of thermoelasticity.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 3; 661-673
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Guided circumferential waves in layered poroelastic cylinders
    Autorzy:
    Shah, S. A.
    Apsar, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/265282.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    teoria Biota
    fala obwodowa
    wał
    łożysko
    frequency
    wave number
    impermeable surface
    borepiston assembly
    shaft-bearing assembly
    circumferential waves
    poroelastic layered cylinder
    Biot’s theory
    Opis:
    The present paper investigates the propagation of time harmonic circumferential waves in a two-dimensional hollow poroelastic cylinder with an inner shaft (shaft-bearing assembly). The hollow poroelastic cylinder and inner shaft are assumed to be infinite in axial direction. The outer surface of the cylinder is stress free and at the interface, between the inner shaft and the outer cylinder, it is assumed to be free sliding and the interfacial shear stresses are zero, also the normal stress and radial displacements are continuous. The frequency equation of guided circumferential waves for a permeable and an impermeable surface is obtained. When the angular wave number vanish the frequency equation of guided circumferential waves for a permeable and an impermeable surface degenerates and the dilatational and shear waves are uncoupled. Shear waves are independent of the nature of surface. The frequency equation of a permeable and an impermeable surface for bore-piston assembly is obtained as a particular case of the model under consideration when the outer radius of the hollow poroelastic cylinder tends to infinity. Results of previous studies are obtained as a particular case of the present study. Nondimensional frequency as a function of wave number is presented graphically for two types of models and discussed. Numerical results show that, in general, the first modes are linear for permeable and impermeable surfaces and the frequency of a permeable surface is more than that of an impermeable surface.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 4; 933-950
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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