1. Reference problem

We read a mesh, we create 3 functions that define:

• for shells

◦ thickness: \(\mathit{epais}\mathrm{=}0.001\mathrm{\times }Z\)

◦ eccentricity: \(\mathit{decal}\mathrm{=}0.002\mathrm{\times }Z\)

• for grills

◦ the section: \(\mathit{section}\mathrm{=}0.001\mathrm{\times }Z+0.001\mathrm{\times }X\mathrm{\times }Y\)

◦ eccentricity: \(\mathit{excent}\mathrm{=}0.002\mathrm{\times }(Z+X+Y)\)