6. D modeling

6.1. Characteristics of modeling

3 DMEC3QU9H cases

The boundary conditions applied on the three borders correspond to the symmetry conditions (movements and rotations blocked).

6.2. Characteristics of the mesh

Number of knots: 331

Number of meshes and types: 75 QUAD9

6.3. Tested sizes and results

(Frequencies in hertz)

Fashion ID	Reference	Aster	% difference
	237.25	237.25 237.26	0 0.004
2
3	282.85	not obtained []
4	305.24	305.18 305.19 305.20	—0.019 —0.017 —0.011
5	324.17	not obtained []
6	346.76	346.17 346.19 346.19 346.19 346.25 346.36	—0.169 —0.165 —0.147 —0.114
7	376.68	not obtained []
8	416.00	413.81 413.84 413.84 413.84 414.02 414.09	—0.525 —0.520 —0.520 —0.518 —0.476 —0.46
9	465.75	not obtained []
10	526.20	520.57 520.62 520.62 520.64 521.64 521.28 521.29 521.31	—1.071 —1.06 —1.056 —1.056 —0.935 —0.933 —0.929

6.4. notes

Modes 3, 5, 7, 9 are not obtained because of the boundary conditions chosen for this model, with the three planes of symmetry.