v7.32.116 WTNP116 - Consolidation issue for the permanent HM model

A SUPPRIMER

Summary:

Here we study a problem of consolidation in dimension 2 of a terrain of infinite length according to one of its dimensions. This test is used to validate several developments:

1. hydromechanical modeling in a saturated porous medium and in a steady state (D_ PLAN_HM_P modeling). Compared to the existing D_ PLAN_HM modeling, this law maintains the writing of the mechanical balance of the porous medium but the temporal derivation of the mass contribution is eliminated in the writing of the conservation of the mass of water.

2. the residual error indicator feature developed specifically for permanent HM modeling via the “ERME_ELEM” option of the CALC_ERREUR command.

3. Solving equations in HM by chaining and in particular the direction of passage of control variables from hydraulics to mechanics

Three models are therefore proposed here, differing only in the orientation of the geometry with respect to the horizontal axis. We consider horizontal geometry (models A and C) and geometry rotated by an angle of \(45°\) (modeling B).

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary conditions and loads
• 2. Benchmark solution
  • 2.1. Calculation method used for the reference solution
  • 2.2. Benchmark results
  • 2.3. Uncertainty about the solution
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. Tested sizes and results
• 4. B modeling
  • 4.1. Characteristics of modeling
  • 4.2. Characteristics of the mesh
  • 4.3. Tested sizes and results
• 5. C modeling
  • 5.1. Characteristics of modeling
  • 5.2. Characteristics of the mesh
  • 5.3. Tested sizes and results
• 6. Summary of results