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Poro-Elasto-Plastic Modeling of Saturated Granular Soils Subjected to Blast Loading
When saturated granular soils are subjected to blast loading, their responses are governed by their poro-elastic and poro-plastic properties. Particularly, the pore water pressure could increase significantly and, after the blast loading, residual pore water pressure could exist due to the plastic deformation of the soil skeleton. For granular soils, this could result in soil liquefaction. In this study, the poro-plastic responses of isotropic granular soils were discussed assuming that the concept of effective stress can be used to describe the plastic deformation. The cap model for granular soils, originally proposed by DiMaggio and Sandler, was extended to take into account the porous characteristics of the material and the solid-fluid coupling. The material was assumed to experience undrained loading due to the fast blast loading process. This study focused on the theoretical aspect of the constitutive modeling. Outcome of this study can be easily incorporated into existing computer subroutines of cap models to reproduce the undrained responses of granular soils with compressible solid grains.
Poro-Elasto-Plastic Modeling of Saturated Granular Soils Subjected to Blast Loading
When saturated granular soils are subjected to blast loading, their responses are governed by their poro-elastic and poro-plastic properties. Particularly, the pore water pressure could increase significantly and, after the blast loading, residual pore water pressure could exist due to the plastic deformation of the soil skeleton. For granular soils, this could result in soil liquefaction. In this study, the poro-plastic responses of isotropic granular soils were discussed assuming that the concept of effective stress can be used to describe the plastic deformation. The cap model for granular soils, originally proposed by DiMaggio and Sandler, was extended to take into account the porous characteristics of the material and the solid-fluid coupling. The material was assumed to experience undrained loading due to the fast blast loading process. This study focused on the theoretical aspect of the constitutive modeling. Outcome of this study can be easily incorporated into existing computer subroutines of cap models to reproduce the undrained responses of granular soils with compressible solid grains.
Poro-Elasto-Plastic Modeling of Saturated Granular Soils Subjected to Blast Loading
Liu, Huabei (Autor:in) / Han, Yuzhen (Autor:in)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 981-986
18.06.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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