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    Wyświetlanie 1-4 z 4
    Tytuł:
    Reflection of plane waves from a free surface of a generalized magneto-thermoelastic solid half-space with diffusion
    Autorzy:
    Singh, B.
    Singh, L.
    Deswal, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/282051.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    generalized thermoelasticity
    plane waves
    reflection
    magnetic field
    diffusion
    Opis:
    Green-Naghdi’s theory of generalized thermoelasticity is applied to study the reflection of P and SV waves from the free surface of a magneto-thermoelastic solid half-space. The boundary conditions are satisfied by appropriate potential functions to obtain a system of four non-homogeneous equations in reflection coefficients. The reflection coefficients depend upon the angle of incidence of P and SV waves, magnetic field, thermal field, diffusion parameters and other material constants. The numerical values of the modulus of the reflection coefficients are shown graphically with the angle of incidence of P and SV waves. The effect of magnetic field is observed significantly on various reflected waves.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2014, 52, 2; 385-394
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On Rayleigh wave in generalized magneto-thermoelastic media with hydrostatic initial stress
    Autorzy:
    Singh, B.
    Kumari, S.
    Singh, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/201293.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    generalized thermoelasticity
    hydrostatic initial stress
    magnetic field
    Rayleigh wave
    frequency equation
    Opis:
    The governing equations of generalized magneto-thermoelasticity with hydrostatic initial stress are solved for surface wave solutions. The particular solutions in the half-space are applied to the boundary conditions at the free surface of the half-space to obtain the frequency equation of Rayleigh wave. The frequency equation is approximated for small thermal coupling and small reduced frequency. The velocity of propagation and amplitude-attenuation factor of Rayleigh wave are computed numerically for a particular material. Effects of magnetic field and hydrostatic initial stress on the velocity of the propagation and amplitude-attenuation factor are shown graphically.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 2; 349-352
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Propagation of plane waves in a rotating transversely isotropic two temperature generalized thermoelastic solid half-space with voids
    Autorzy:
    Bijarnia, R.
    Singh, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/265710.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    anizotropia
    termosprężystość
    odbicie
    anisotropy
    generalized thermoelasticity
    voids
    plane waves
    reflection
    reflection coefficient
    Opis:
    The paper is concerned with the propagation of plane waves in a transversely isotropic two temperature generalized thermoelastic solid half-space with voids and rotation. The governing equations are modified in the context of Lord and Shulman theory of generalized thermoelasticity and solved to show the existence of four plane waves in the x – z plane. Reflection of these plane waves from thermally insulated stress free surface is also studied to obtain a system of four non-homogeneous equations. For numerical computations of speed and reflection coefficients, a particular material is modelled as transversely isotropic generalized thermoelastic solid half-space. The speeds of plane waves are computed against the angle of propagation to observe the effects of two temperature and rotation. Reflection coefficients of various reflected waves are also computed against the angle of incidence to observe the effects of various parameters.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2016, 21, 2; 285-301
    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
      Wyświetlanie 1-4 z 4

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