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A finite elastoplastic flow theory for porous media

✍ Scribed by Y.K. Lee

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
903 KB
Volume
4
Category
Article
ISSN
0749-6419

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✦ Synopsis

A yield criterion and basic flow equations are developed for finite elastoplastic deformation of porous materials. The yield criterion is derived using a specific micromechanical model of noninteracting spherical pores, with the matrix material being of the yon Mises type. The criterion satisfies the convexity requirement of plasticity theory and accounts for the effect of hydrostatic stress. The theoretical prediction of yield stress is in good agreement with published experimental data. The field equations for finite elastoplastic deformation of the porous media are obtained by generalizing those for plastically incompressible materials. The equations are derived in the form of a combined initial-and boundary-value problem whose spatial domain is the current configuration of the deformed body.

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✍ Jong-Gyun Kim; Milind D. Deo πŸ“‚ Article πŸ“… 2000 πŸ› American Institute of Chemical Engineers 🌐 English βš– 315 KB πŸ‘ 2 views

## Abstract A new discrete‐fracture multiphase flow model developed allows incorporation of fractures in a spatially explicit fashion. It is an alternative to conventional dual‐porosity, dual‐permeability models used most often to model fractured subsurface systems. The model was applied to a water