4. B modeling#

4.1. Characteristics of modeling#

Modeling with elements of BARRE and CABLE.

4.2. Characteristics of the mesh#

The mesh contains:

  • 2 elements of type BARRE.

  • 60 elements of type CABLE. (15 elements per cable).

4.3. Tested sizes and results#

We test the 1st natural vibration frequency of the cables. The DYNA_NON_LINE operator with the MODE_VIBR option does not allow you to know the following ones. It is a non-regression test.

No

Reference type

Calculated value

Tolerance

10

“NON_REGRESSION”

\(62.7962\mathit{Hz}\)

default

20

“NON_REGRESSION”

\(88.5701\mathit{Hz}\)

default

Note: For the record, the reference vibration frequencies are: \(62.732270963\mathit{Hz}\) and \(88.728308982\mathit{Hz}\)

4.4. notes#

The calculation is carried out with the operator DYNA_NON_LINE, with the keyword factor MODE_VIBR. The operator only makes it possible to know a single frequency which is displayed in the message file and stored in the parameter FREQ of the data structure produced by the operator. That’s why it’s a non-regression test.