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    Wyświetlanie 1-4 z 4
    Tytuł:
    Influence of inertia forces on soil settlement under harmonic loading
    Autorzy:
    Wrana, B.
    Pietrzak, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/178311.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    model Biota
    dynamika gruntów
    ośrodek porowaty
    osiadanie gruntu
    porous solid
    soils
    soil dynamic
    soil settlement
    Biot model
    Opis:
    The paper deals with the comparison of Biot’s model for saturated, porous soils with other simplified models used in dynamic analysis. The purpose of this paper is to determine some limits of validity of the various models. In order to do this a full set of governing, dynamic equations of Biot model and a series of simplifying models such as u-p simplification and quasi-static consolidation models are considered. These formulations are applied to a simple soil layer under periodic surface loading. A displacement of skeleton and a displacement of fluid are shown and compared with each model for various formulations.
    Źródło:
    Studia Geotechnica et Mechanica; 2013, 35, 1; 245-258
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical calculation of deformation of three dimensional sample in triaxial apparatus under external load and temperature field
    Autorzy:
    Bartlewska-Urban, M.
    Strzelecki, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/178206.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    geotechnika
    termokonsolidacja
    ośrodek porowaty
    obliczenia numeryczne
    reologiczny szkielet Kelvina-Voigta
    thermal consolidation
    numerical calculations
    porous medium
    Kelvin-Voight rheological skeleton
    Opis:
    This study presents the results of calculations of the of thermo consolidation process of porous medium with the rheological Kelvin–Voigt skeleton, obtained numerically with the use of Flex.PDE. It is a continuation of the discussion on the phenomenon of thermal consolidation. A 3D problem considered boils down to solving the problem of the porous column filled with a liquid and treated by applying uniaxial compression load through a porous plate, allowing free flow of liquid from the center. To the sample affected by external lateral pressure. Numerical solution assumes compressing the sample at properly defined boundary conditions. The aim of this study was to describe the influence of external load and temperature gradient in the deformation tests for the case when the lateral surface is a good conductor of heat, and where the lateral surface of the sample does not conduct heat. The results obtained, in the context of further research, can also be used to determine the influence of other parameters of the state and model parameters on the process of thermo poroelasticity of the Biot model with rheological skeleton.
    Źródło:
    Studia Geotechnica et Mechanica; 2013, 35, 1; 27-40
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydromagnetic thermal instability of compressible Walters' (Model B') rotating fluid permeated with suspended particles in porous medium
    Autorzy:
    Rana, G. C.
    Jamwal, H. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/178884.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    lepkosprężyste ciecze Walters B
    cząstki zawieszone
    ośrodek porowaty
    niestabilność termiczna
    Walters B' viscoelastic fluid
    suspended particles
    porous medium
    thermal instability
    Opis:
    In this paper, the thermal instability of compressible Walters’ (Model B′) rotating fluid permeated with suspended particles (fine dust) in porous medium in hydromagnetics is considered. By applying normal mode analysis method, the dispersion relation has been derived and solved analytically. It is observed that the rotation, magnetic field, suspended particles and viscoelasticity introduce oscillatory modes. For stationary convection, Walters’ (Model B′) elastico-viscous fluid behaves like an ordinary Newtonian fluid and it is observed that rotation has stabilizing effect, suspended particles are found to have destabilizing effect on the system, whereas the medium permeability has stabilizing or destabilizing effect on the system under certain conditions. The magnetic field has destabilizing effect in the absence of rotation, whereas in the presence of rotation, magnetic field has stabilizing or destabilizing effect under certain conditions.
    Źródło:
    Studia Geotechnica et Mechanica; 2013, 35, 4; 75-88
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Triple-diffusive convection in Walters' (Model B') fluid with varying gravity field saturating a porous medium
    Autorzy:
    Kango, S. K.
    Rana, G. C.
    Chand, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/178886.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    lepkosprężyste ciecze Walters B
    ciecz Waltersa
    ośrodek porowaty
    konwekcja
    Walters' (model B') fluid
    Walters' B liquid model
    Walters' B' fluid
    porous media
    convection
    Opis:
    The Triple-Diffusive convection in Walters’ (Model B') fluid with varying gravity field is considered in the presence of uniform vertical magnetic field in porous medium. For the case of stationary convection, the magnetic field, varying gravity field and the stable solute gradients have stabilizing effects whereas the medium permeability has destabilizing (or stabilizing) effect on the system under certain conditions. A linear stability analysis theory and normal mode analysis method have been carried out to study the onset convection. The kinematic viscoelasticity has no effect on the stationary convection. The solute gradients, magnetic field, varying gravity field, porosity and kinematic viscoelasticity introduce oscillatory modes in the system, which were non-existent in their absence. The sufficient conditions for the non-existence of overstability are also obtained. The results are also shown graphically.
    Źródło:
    Studia Geotechnica et Mechanica; 2013, 35, 3; 45-56
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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