3. Modeling A

3.1. Characteristics of modeling

3D Modeling: **

Elementary cube meshed using a hexahedron with 8 knots.

3.2. Characteristics of the mesh

1 HEXA8 stitch, side width \(a=1\).

3.3. Tested sizes and results

Identification	Reference	Aster	% difference
In all knots
\(\mathrm{\epsilon }\)	2.10-5	2.10-5	0
\(\mathrm{\gamma }\)	2.610-5	2.610-5	0
\({\mathrm{\epsilon }}_{p}\)			0
\({\mathrm{\gamma }}_{p}\)	0	0	0
	0	0	0
\({\mathrm{\sigma }}_{p}\)	64.8	64.8	0

The test also validates the reading of field EPSP_ELNO by LIRE_RESU, we check that we have the same values before and after writing/reading the result:

3.4. notes

The charge used here does not cause plasticization, whereas without viscosity, this same load leads the structure into an elastoplastic regime.

The test concerning the value \({\sigma }_{p}\) does not give exactly the same value on all machines (TOLE_MACHINE needed). This problem is linked to a function having a vertical tangent (power 0.3) that appears in the law of behavior. See the comment in the ssnv200a.comm file.