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Since the form has been known and the procedure to mesh the surface is known now, an optimisation of the mesh can be performed (Fig. 21). The aim is to find a mesh that can mesh the entire surface and that creates acceptable stresses in the beams. To this end, the curvature of the elements is checked using the following equation (Eq. 3):

(3)

Different sets of guide-curves are chosen and the resulting meshes are compared according to this criterion:

Mesh n°1

Mesh n°2

Mesh n°3

Fig. 21 Mesh testing