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- W2241225158 abstract "The present paper outlines the stress-strain behaviour of cohesionless soils under saturated and unsaturated (empty) conditions by the example of dense Berlin Sand. Sand as well as soils in general are porous media consisting of a soil skeleton with filled or empty voids. To describe strains and flow processes in such a porous solid, an elasto-plastic model is used and presented in the framework of the Theory of Porous Media (TPM) defined by the elements mixture theory and concept of volume fractions. Within the constitutive equations of the elasto-plastic model, the elastic response is described by a materially non-linear elasticity law. Plastic deformations are considered in the context of a single-surface yield function with isotropic hardening properties. Non-associated flow is realized with an additional plastic potential function. Isotropic behaviour is assumed and the study is restricted to small strains. Parameter identification for the described model is shown for dense Berlin Sand on the basis of triaxial tests. The presented model is implemented into the finite element code PANDAS; numerical examples will demonstrate the capability of the formulation." @default.
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- W2241225158 date "1999-01-01" @default.
- W2241225158 modified "2023-09-25" @default.
- W2241225158 title "On Coupled Solid-fluid Problems for Cohesionless Soils" @default.
- W2241225158 hasPublicationYear "1999" @default.
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