2. Benchmark solution

2.1. Calculation method

In \(\mathrm{3D}\), (modeling A), the first calculation (behavior VISC_CIN1_CHAB) is used as a reference. The values obtained at the last increment are (at any point in the mesh):

Constraint	\(\mathit{SIXX}\)	-9.55E+01
Total deformation	\(\mathit{EPXX}\)	-6.76443E-04
Plastic deformation	\(\mathit{EPXX}\)	-1.87292E-05

The calculations with MONO_ISOT1 or the first calculations with MONO_ISOT2 are validated by comparison with this result or by inter-comparison.

On the other hand, the other calculations (behaviors MONO_VISC2, MONO_DD_KR) do not have a reference value. The tests are therefore non-regression. In addition, the five calculations corresponding to Zirconium do not have a reference solution but must give one and the same solution.

In \(\mathrm{2D}\), (modeling B), the first calculation (behavior VISC_CIN1_CHAB) is used as a reference. The values obtained at the last increment are (at any point in the mesh, because uniform deformation is imposed):

Constraint

\(\mathit{SIXX}\)

95.999316

The second and third calculations (behavior MONOCRISTAL with sliding system UNIAXIAL) are validated by comparison with this result.

The third calculation uses explicit integration (RUNGE_KUTTA), while the second calculation uses implicit integration.