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 |
49 |
Table 2.2-1
2.3. Tested sizes and results#
Fashion |
Value AFNOR (Hz) |
Pipestress value (Hz) |
Aster value (Hz) |
Aster gap- AFNOR (%) |
|
1 |
235.3 |
237.199 |
237.199 |
237.136 |
0.7802805 |
2 |
575.3 |
581.255 |
579.199 |
0.6777334 |
|
3 |
1105.7 |
1116.914 |
1116.914 |
1112.367 |
0.6029664 |
4 |
1405.6 |
1418.716 |
1418.716 |
1414.104 |
0.6050085 |
5 |
1751.1 |
1766.390 |
1766.390 |
1758.274 |
0.4096853 |
6 |
2557 |
2574.593 |
2574.593 |
2565.583 |
0.3356668 |
7 |
2801.5 |
2777.731 |
2770.474 |
1.1074781 |
Table 2.3-1: Comparison of frequencies
2.4. Modal deformed#
Figure 2.4-1:Deformed modal mode 1