4. B modeling

4.1. Characteristics of modeling

The lyre is divided into 3 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: 10560

Number of meshes and types: 1196 SEG2, 5522 QUAD4 and 9735 HEXA8

Lyre2

Number of knots: 10560

Number of meshes and types: 1196 SEG2, 5522 QUAD4 and 9735 HEXA8

Lyre3

Number of knots: 17072

Number of meshes and types: 1952 SEG2, 8778 QUAD4 and 15840 HEXA8

Lyreglobale

Number of nodes: 51212

Number of meshes and types: 4244 SEG2, 22150 QUAD4 and 48825 HEXA8

4.3. Tested sizes and results

We test the values of the MAC matrix.