6. D modeling#

6.1. Characteristics of modeling#

_images/Object_20.svg

6.2. Characteristics of the mesh#

Number of knots: 54

Number of meshes and type: 10 QUAD9

6.3. Tested values#

_images/Object_21.svg

Identification

Moments

Reference

Aster

% difference

5

ETA_PILOTAGE

5

1.0

1.0978

9.78

25

ETA_PILOTAGE

25

1.0

1.1085

10.85

6.4. notes#

In this analysis, an imposed displacement type resolution technique (“DDL_IMPO”) is used to find the solution. This method provides for each imposed displacement value, a load multiplier coefficient (“ETA_PILOTAGE”). The value of the load imposed in “AFFE_CHAR_MECA” is equal to the limit pressure, therefore the reference value of the parameter “ETA_PILOTAGE” is equal to 1.

The calculations were stopped when the value of parameter ETA_PILOTAGE stabilized.

The reference being taken with respect to the beam solution with 50 elements, we observe an improvement in 3D shell results QUAD9 when the mesh is refined.