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- W22152439 abstract "Nowadays an increasing interest on thermo-hydro-mechanical analysis of multiphase porous media is observed because of a wide spectrum of application in civil and environmental engineering. The onset of landslides caused by rainfall or earthquake, the onset of catastrophic landslides, the seismic behaviour of deep radioactive waste disposal and concrete or earth dams are just few and challenging examples.As novel aspect, this work presents the development of a mathematical and numerical model for the analysis of the thermo-hydro-mechanical behaviour of multiphase porous materials in dynamics.The fully coupled multiphase model for non isothermal deformable porous media is developed within the hybrid mixture theory.In order to analyse the thermo-hydro-mechanical behaviour of a soil structure in the low frequency domain, e.g. under earthquake excitation, the u-p(-T) formulation is advocated for the finite element discretization, neglecting the relative fluids acceleration and their convective terms. As a consequence, the number of the independent variables is reduced to four: gas pressure, capillary pressure, temperature and solid skeleton displacements. Moreover, the dynamic seepage forcing terms in the mass and enthalpy balance equations and the compressibility of the solid grain at the microscopic level are neglected.The standard Bubnov-Galerkin method is applied to the governing equations for the spatial discretization, whereas the generalized Newmark scheme is used for the time domain discretization. The final algebraic, non linear and coupled system of equations is solved by the Newton method with a monolithic approach.The formulation and the implemented solution procedure are validated through the comparison with literature benchmarks, finite element solutions or analytical solutions when available." @default.
- W22152439 created "2016-06-24" @default.
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- W22152439 date "2012-07-31" @default.
- W22152439 modified "2023-09-23" @default.
- W22152439 title "Development of a model for the thermo-hydro-mechanical analysis of multiphase porous media in dynamics" @default.
- W22152439 hasPublicationYear "2012" @default.
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