4. B modeling

4.1. Characteristics of modeling

The lyre is divided into 2 substructures, meshed in an identical manner and therefore conformal.

Moreover, the problem is solved on a global network. This makes it possible to compare the 2 approaches by calculating the MAC criterion (Modal Assurance Criterion).

4.2. Characteristics of the mesh

Lyre 1

Number of knots: 6936

Number of meshes and types: 1080 SEG2, 4250 QUAD4 and 6250 HEXA8

Lyre 2

Number of knots: 6936

Number of meshes and types: 1080 SEG2, 4250 QUAD4 and 6250 HEXA8

Lyre global

Number of knots: 12376

Number of meshes and types: 1880 SEG2 ,7450 QUAD4 and 11250 HEXA8

4.3. Tested sizes and results

We test the values of the MAC matrix.