9. G modeling#

9.1. Characteristics of modeling#

Elements MECA_TETRA10, MEFL_TETRA10, MESF_TRIA6

_images/1000000000000118000000C8939DB54DD4846469.png

Boundary conditions:

In all the knots on the face \(M\)

In all the nodes of the piston

9.2. Characteristics of the mesh#

Number of knots:

366

Number of meshes and types:

173 TETRA10, 16 TRIA6

9.3. Tested values#

Frequency

( \(\mathrm{Hz}\) )

Reference

Aster

Error (%)

13.8285

13.8277

-0.006

9.4. notes#

Mode calculations performed by:

CALC_MODES

OPTION =” AJUSTE “, CALC_FREQ =_F (FREQ =( 10.,20.))

The analytical solution of the first eigenvector is not known.

Contents of the results file:

Value of the first natural vibration frequency of the coupled system.