4. B modeling#

4.1. Characteristics of modeling#

The modeling tested is 3D. We use the symmetries of the problem to represent only one sixteenth of the sphere.

_images/10000000000001F40000026CEC440C4794955818.png

Figure 4.1-a : geometry of the structure — 3D model

4.2. Characteristics of the mesh#

The model is 3D and includes 4905 HEXA8.

4.3. Tested sizes and results#

To validate the solution obtained, the pilot parameter is tested at the last moment, which should be equal to the pressure obtained by the formula given in §2.

Value tested

Instant

Reference

Type

Variance

Control parameter

20.0

415.89

Analytics

1.6%

20.0

422.4168347

Non-regression

\(1.0\mathrm{\times }{10}^{\mathrm{-}8}\text{\%}\)