4. B modeling

4.1. Characteristics of modeling

Simulation at the hardware point. The objective is to validate the compatibility of CALC_ESSAI_GEOMECA with the MOHR_COULOMB law. To do this, a monotonous drained triaxial test with imposed displacement ESSAI_TRIA_DR_M_D is carried out. The number of time increments is equal to 300. The initial containment pressure is \({\mathrm{\sigma }}_{0}=50\mathit{kPa}\). The maximum axial deformation is equal to \({\mathrm{ϵ}}_{\mathit{zz}}^{\mathit{max}}=\mathrm{0,03}\text{\%}\). The convergence criterion is RESI_GLOB_RELA = 10-10.

4.2. Tested sizes and results

The solutions are compared to the analytical solution at the final moment. They are given in terms of vertical \({\mathrm{\sigma }}_{\mathit{zz}}\) and horizontal \({\mathrm{\sigma }}_{\mathit{xx}}\) constraints, and summarized in the following table:

\(t=30\mathit{sec}\)	Code_Aster	Analytical Solution	Relative Error [%]
\({\mathrm{\sigma }}_{\mathit{zz}}\)	1,732895416041E+5	1,732895416041E+5	0
\({\mathrm{\sigma }}_{\mathit{xx}}\)	50,000.	50,000.	0

Table 4.2-1 : Validation of results for modeling B