5. C modeling#

5.1. Characteristics of C modeling#

Identical to modeling A with the addition of proportional viscous damping such as:

\([C]=\alpha [K]+\beta [M]\)

with

\(\alpha =0.2852750549\times {10}^{-4}\) and \(\beta =57.62031174\)

The Lanczos method (METHODE = “TRI_DIAG”) is used to calculate the natural modes.

5.2. Characteristics of the mesh#

Same as modeling A.

5.3. Tested sizes and results#

Non-regression tests only except for validating options MATE_ELGA and MATE_ELEM.

Identification

Reference Value

Reference Type

Tolerance

Field MATE_ELGA, Mesh MA000074, Point 1, Comp. RHO

1E3

“ANALYTIQUE”

0.1%

Field MATE_ELEM, Mesh MA000074, Comp. E

1E3

“ANALYTIQUE”

0.1%

Field MATE_ELGA, Mesh MA000081, Point 1, Comp. RHO

3E3

“ANALYTIQUE”

0.1%

Field MATE_ELEM, Mesh MA000081, Comp. E

3E3

“ANALYTIQUE”

0.1%