We consider a poromechanics model including frictionless contact mechanics. The resulting model is the Biot equation with contact boundary conditions leading to a variational inequality modelling mechanical deformations coupled to a linear parabolic flow equation. We propose a fully discrete iterative scheme for solving this model, extending the fixed-stress splitting scheme. We use finite elements in space and a backward Euler discretization in time. We show that the fixed stress split scheme is a contraction.

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Fixed Stress Splitting Approach for Contact Problems in a Porous Medium

  • Tameem Almani,
  • Kundan Kumar

摘要

We consider a poromechanics model including frictionless contact mechanics. The resulting model is the Biot equation with contact boundary conditions leading to a variational inequality modelling mechanical deformations coupled to a linear parabolic flow equation. We propose a fully discrete iterative scheme for solving this model, extending the fixed-stress splitting scheme. We use finite elements in space and a backward Euler discretization in time. We show that the fixed stress split scheme is a contraction.