2. Modeling A#

2.1. Characteristics of modeling#

Elements POU_D_T and DIS_TR.

2.2. Characteristics of the mesh#

Number of nodes

Number of elements

49

50

Table 2.2-1

2.3. Tested sizes and results#

Fashion

Value AFNOR (Hz)

Pipestress value (Hz)

Aster value (Hz)

Aster gap- AFNOR

In plane 4

227.29

229.575

229.089

0.7914998

In plane 5

297.87

302.063

301.080

1.0776513

In plane 6

718.42

726.535

726.535

723.657

0.7289608

In plane 7

873.88

887.039

882.727

1.0123816

Transverse 4

409.8

406.3

406.3

408.921

0.2144949

Transverse 5

510.2

505.991

510.559

0.0703646

Table 2.3-1: Comparison of frequencies