Poroelasticity: Mandel-Cryer Simulation using Abaqus
The Mandel-Cryer effect is the phenomenon in which the induced pore water pressure may become higher than the applied pressure in saturated soil. It was first described by Mandel (1953) for a triaxial soil sample and by Cryer (1963) for a spherical soil sample.We consider Cryer's sphere problem here.
Only an octant of a sphere is considered due to symmetry of the problem. Abaqus C3D8P elements are used for the mesh. The *SOILS, CONSOLIDATION procedure is used. The boundaries on the symmetry planes are fixed in their normal directions.
An initial pressure suddenly applied on the sphere surface, which transfers the load to the pore pressure; the sphere is impermeable initially. Following this, the sphere surface is made permeable and the pore fluid is squeezed out, and the soil begins to deform and carry load.
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