12. J modeling#

12.1. Characteristics of modeling#

Elements MEDPTR6, MEFLTR6, MEFSSE3

_images/10000000000001FA000000BDF1D4DEE64ABD960B.png

Boundary conditions:

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

In all the nodes of the piston

12.2. Characteristics of the mesh#

Number of knots:

65

Number of meshes and types:

24 TRIA6, 4 SEG3

12.3. Tested values#

Frequency

( \(\mathrm{Hz}\) )

Reference

Aster

Error (%)

13.8285

13.8277

-0.006

12.4. notes#

Calculations made 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.