4. B modeling#

4.1. Characteristics of modeling#

_images/Object_30.svg

4.2. Characteristics of the mesh#

Number of knots: 22

Number of meshes and type: 10 QUAD4

4.3. Tested sizes and results#

Identification

Reference

Aster

% difference

Frequency mode 1

64.476

277.788

331

Frequency mode 2

131.918

131.918

1111.225

Frequency mode 3

198.734

2500.930

1.16E3

Frequency mode 4

265.383

4449.073

1.52E3

Frequency mode 5

331.963

6960.324

2.00E3

4.4. notes#

In the results table, we reported the frequencies whose modes are identical to the reference modes.

  • the effects of transverse shear are overlooked in modeling DKT,

  • Code_Aster results are much higher than the reference results,

  • appearance of a membrane mode between modes 2 and 3 and between modes 5 and 6 of reference.