8. F modeling#

8.1. Characteristics of modeling#

Elements MECA_PENTA6, MEFL_PENTA6, MESF_TRIA3

_images/1000000000000120000000D01524E766509A4741.png

Boundary conditions:

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

In all the nodes of the piston

8.2. Characteristics of the mesh#

Number of nodes:

84

Number of meshes and types:

84 PENTA6, 28 TRIA3

8.3. Tested values#

Frequency

( \(\mathrm{Hz}\) )

Reference

Aster

Error (%)

13.8285

13.8277

-0.006

8.4. 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.