jeanpierreaubry ...that’s a matter of perspective. As I mentioned, based on my experience with Ansys, I’ve always started with the simplest model and then refined the analysis.
However, I’m still curious about Code_Aster and how to extract results—this is a slight digression from my specific problem, though still related to it.
Yesterday, I ran a simple case: a single simply-supported L-angle (2" x 2" x 1/4") with a span of 1000 mm, subjected to a vertical load (FY) of -0.1 N/mm. It’s a textbook statics problem. I’ve attached an image showing how I defined the group for the structural supports. The expected results are support reactions of 50 N, a shear force of +50/-50 N (linear distribution), and a bending moment of 12,500 N·mm.
I performed the calculation for this structure in Code_Aster, but I haven't figured out how to extract those specific values yet. I used EFGE_ELNO, but I lack the expertise to judge whether that was the right choice. The result is shown below.
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#--------------------------------------------------------------------------------
##ASTER 17.04.00 CONCEPT 0000002d CALCULE LE 04/09/2026 A 07:59:19 DE TYPE
INTITULE RESU NOM_CHAM NUME_ORDRE INST DX DY DZ
REACTION FIX_XYZ 0000000a REAC_NODA 1 0.00 -0.00 50.00 0.00
REACTION FIX_Y ( 0000000a REAC_NODA 1 0.00 -0.00 50.00 -0.00
#
#--------------------------------------------------------------------------------
##ASTER 17.04.00 CONCEPT 0000002e CALCULE LE 04/09/2026 A 07:59:19 DE TYPE
INTITULE RESU NOM_CHAM NUME_ORDRE INST DX DY DZ
SUM OF REACTIONS 0000000a REAC_NODA 1 0.00 -0.00 100.00 0.00
#
#--------------------------------------------------------------------------------
##ASTER 17.04.00 CONCEPT 0000002f CALCULE LE 04/09/2026 A 07:59:19 DE TYPE
INTITULE RESU NOM_CHAM NUME_ORDRE INST EXTREMA NOEUD CMP VALE
MAX DISP DY (mm) 0000000a DEPL 1 0.0000 MAX 2 DY 0.0000
MAX DISP DY (mm) 0000000a DEPL 1 0.0000 MIN 967 DY -0.0549
MAX DISP DY (mm) 0000000a DEPL 1 0.0000 MAXI_ABS 967 DY 0.0549
MAX DISP DY (mm) 0000000a DEPL 1 0.0000 MINI_ABS 3 DY 0.0000
#
#--------------------------------------------------------------------------------
##ASTER 17.04.00 CONCEPT 00000030 CALCULE LE 04/09/2026 A 07:59:19 DE TYPE
INTITULE RESU NOM_CHAM NUME_ORDRE INST EXTREMA MAILLE NOEUD CMP VALE
MXX FR (N) 0000000a EFGE_ELNO 1 0.00 MAX 924 3 MXX 0.31
MXX FR (N) 0000000a EFGE_ELNO 1 0.00 MIN 923 110 MXX -5.23
MXX FR (N) 0000000a EFGE_ELNO 1 0.00 MAXI_ABS 923 110 MXX 5.23
MXX FR (N) 0000000a EFGE_ELNO 1 0.00 MINI_ABS 1325 215 MXX 0.00
MYY FR (N) 0000000a EFGE_ELNO 1 0.00 MAX 924 3 MYY 2.94
MYY FR (N) 0000000a EFGE_ELNO 1 0.00 MIN 923 110 MYY -1.73
MYY FR (N) 0000000a EFGE_ELNO 1 0.00 MAXI_ABS 924 3 MYY 2.94
MYY FR (N) 0000000a EFGE_ELNO 1 0.00 MINI_ABS 1441 235 MYY 0.00
QX FR (N/mm) 0000000a EFGE_ELNO 1 0.00 MAX 924 110 QX 0.67
QX FR (N/mm) 0000000a EFGE_ELNO 1 0.00 MIN 825 12 QX -0.60
QX FR (N/mm) 0000000a EFGE_ELNO 1 0.00 MAXI_ABS 924 110 QX 0.67
QX FR (N/mm) 0000000a EFGE_ELNO 1 0.00 MINI_ABS 976 869 QX 0.00
QY FR (N/mm) 0000000a EFGE_ELNO 1 0.00 MAX 923 110 QY 0.42
QY FR (N/mm) 0000000a EFGE_ELNO 1 0.00 MIN 924 3 QY -0.43
QY FR (N/mm) 0000000a EFGE_ELNO 1 0.00 MAXI_ABS 924 3 QY 0.43
QY FR (N/mm) 0000000a EFGE_ELNO 1 0.00 MINI_ABS 1411 1301 QY 0.00
The DEPL field was consistent with what I calculated.
In this case, how would it be possible to obtain results consistent with the analytical calculation? It is worth noting that I multiplied the results obtained from EFGE_ELNO by 50.8 mm.
