6. D modeling#

6.1. Characteristics of modeling#

This modeling is based on linear meshing. The 9 surface meshes (QUAD4) of each plate are assigned from the GRILLE_MEMBRANE model and duplicated to form the groups DKT_X, DKT_Y and DKT_Z that are assigned from the DKT modeling.

In each case the grids are oriented in the direction of the length of the plate.

6.2. Calculations and loads#

Two calculations are carried out on each plate of the mesh. Calculation loads are detailed on groups COQ_X/DKT_X. Then simply replace \(X\) by \(Y\) and then \(Z\) to get the loads of the other calculations.

6.2.1. 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.

Note: this calculation validates the consideration of pre-deformations by value for modeling GRILLE_MEMBRANE compared to the same calculation with modeling GRILLE_EXCENTRE (modeling C).

6.2.2. Second calculation, pre-deformation defined by function#

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

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

6.3. Tested sizes and results#

Calculation on COQ_X/DKT_X :

Reference calculation:

Identification	T reference type	Reference values	Tolerance
Instant 1, FLX, DX	“NON_REGRESSION”
Instant 2, FLX, DX	“NON_REGRESSION”

Second calculation:

Identification	T reference type	Reference values	Tolerance
Instant 1, FLX, DX	“AUTRE_ASTER”	0.00298308765372	1E-6
Instant 2, FLX, DX	“AUTRE_ASTER”	0.00596617530744	1E-6

Calculation on COQ_Y/DKT_Y :

Reference calculation:

Identification	T reference type	Reference values	Tolerance
Instant 1, FLY, DY	“AUTRE_ASTER”	0.00298308765372	1E-6

Second calculation:

Identification	T reference type	Reference values	Tolerance
Instant 1, FLY, DY	“AUTRE_ASTER”	0.00298308765372	1E-6

Calculation on COQ_Z/DKT_Z :

Reference calculation:

Identification	T reference type	Reference values	Tolerance
Instant 1, FLZ, DZ	“AUTRE_ASTER”	0.00298308765372	1E-6

Second calculation:

Identification	T reference type	Reference values	Tolerance
Instant 1, FLZ, DZ	“AUTRE_ASTER”	0.00298308765372	1E-6