Evento
A fully coupled numerical simulation of saturated porous media using the material point method
Tipo del evento:
Congreso
Nombre del evento:
XXIV Congreso sobre Métodos Numéricos y sus Aplicaciones
Fecha del evento:
05/11/2019
Institución Organizadora:
Asociación Argentina de Mecánica Computacional;
Título de la revista:
Mecánica Computacional
Editorial:
Asociación Argentina de Mecánica Computacional
ISSN:
2591-3522
Idioma:
Inglés
Clasificación temática:
Resumen
In this work, an improved formulation and its numerical implementation of a coupled water pore pressure and soil deformation model were presented. Among other numerical issues, it is well known the lack of objectivity of the Finite Element Method (FEM) to reproduce very large deformation rates due to extreme external actions. Therefore, in order to overcome these computational drawbacks, the theoretical approach presented in this work was implemented with an explicit numerical method known as the Material Point Method (MPM). One important aspect of this coupled formulation is the assumption of two independent sets of Lagrangian material points for each phase to accurately represent the soil skeleton and pore water pressure, for the fully saturated case. On the other hand, to avoid pore pressure oscillations, observed during the modelling of large deformation problems with spatial variation of soil porosity, an enhanced evaluation procedure of the water pore pressure gradient with a non-local Generalized Interpolation Material Point (GIMP) was proposed. The present formulation has been applied to model the progressive failure of a granular slope as well as river levees to illustrate real engineering applications. Also, the numerical results show the robustness and accuracy of the proposed method for large deformations simulations in saturated porous media.
Palabras clave:
MODELADO CONSTITUTIVO
,
MPM
,
SATURATED SOIL
,
DYNAMIC
Archivos asociados
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Identificadores
Colecciones
Eventos(CCT - NORDESTE)
Eventos de CTRO.CIENTIFICO TECNOL.CONICET - NORDESTE
Eventos de CTRO.CIENTIFICO TECNOL.CONICET - NORDESTE
Citación
A fully coupled numerical simulation of saturated porous media using the material point method; XXIV Congreso sobre Métodos Numéricos y sus Aplicaciones; Santa Fe; Argentina; 2019; 1399-1399
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