4. B modeling#

4.1. Characteristics of modeling#

Elements MEDPQU4, MEFLQU4, MEFSSE2

_images/100017A600002623000013542AA810B4E5250CFA.svg

Boundary conditions:

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

In all the nodes of the piston

4.2. Characteristics of the mesh#

Number of knots:

21

Number of meshes and types:

12 QUAD4, 4 SEG2

4.3. Tested values#

Frequency

( \(\mathrm{Hz}\) )

Reference

Aster

Error (%)

13.8285

13.8277

< 0.01

4.4. 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.