The elastic-plastic model is adopted to simulate the behavior of saturated porous
material under mechanical and hydraulic loading. Linear strains are calculated with Biot
coupled poroelastic equations. Transition to the plastic state is determined by Mohr-Coulomb
or Drucker-Prager criterion in Terzaghi effective stress space. Multisurface theory of
plasticity algorithms are used for integration of nonlinear constitutive equations. The results
of computations show a good agreement in comparison with available experimental data.
Keywords: saturated porous material; mechanical and hydraulic loading; poroplastic model; nonlinear analysis.
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