7. E modeling

7.1. Characteristics of modeling

This modeling is based on quadratic meshing. The 27 volume cells (HEXA20) are affected by the 3D modeling, the surface cells (QUAD8) of the group GRILLE (upper face) are affected by the modeling GRILLE_MEMBRANE.

The grids are oriented in the \(X\) direction.

7.2. Calculations and loads

Two calculations are made.

7.2.1. Reference calculation, pre-deformation defined by value

In the reference calculation, the following pre-deformation values are assigned:

	G1X	G2X	G3X
EXX	1E-3	2E-3	3E-3

The dependence on time is taken into account by adding an « identity » multiplier function to the load.

7.2.2. Second calculation, pre-deformation defined by function

The following pre-deformation load is affected on all the cells in group GRILLE:

EXX	\(\mathrm{1E-3.}\mathit{escalier}(X)\mathrm{.}\mathit{INST}\)

7.3. Tested sizes and results

Reference calculation:

Identification	T reference type	Reference values	Tolerance
Instant 1, FLX, DX	“NON_REGRESSION”

Second calculation:

Identification	T reference type	Reference values	Tolerance
Instant 1, FLX, DX	“AUTRE_ASTER”	-0.00235783307917	1E-6