[SOLVED] Post-processing results of fatigue analysis

pilafa

Hi,

I am doing a fatigue analysis:

(...)


 
Fatigue=CALC_FATIGUE(TYPE_CALCUL='CUMUL_DOMMAGE',
                     OPTION='DOMA_ELNO_SIGM',
                     HISTOIRE=_F(RESULTAT=Solution,
                                 EQUI_GD='VMIS_SG',),
                     DOMMAGE='WOHLER',
                     MATER=Steel,);

                     
IMPR_RESU(FORMAT='MED',
          UNITE=80,
          RESU=(_F(MAILLAGE=Mesh,
                   RESULTAT=Solution,
                   NOM_CHAM='DEPL',
                   NOM_CMP=('DX','DY','DZ',),),
                _F(RESULTAT=Solution,
                   NOM_CHAM=('SIEQ_NOEU','SIEQ_ELNO',),             
                   NOM_CMP='VMIS',),
                _F(CHAM_GD=Fatigue, )   
                   ),

);

When I open the results, I have the field "DOMA". I assume it's the "dommage". What exactly is the "dommage". How can I relate it to the number of cycles?

Thanks

reiteres

Hi!

According to the documentation (at least if I understood correctly) dommage = 1/N, where N is the number of cycles.

pilafa

Thank you Reiteres.

I "read" all the documentation I found about fatigue, but I apparently missed that...

Now I see it:

U4.83.02 wrote:
NBRUP1 nombre de cycles avant rupture (fonction de SIGEQ1 et d'une courbe de Wöhler)

ENDO1 endommagement associé à NBRUP1 (ENDO1=1/NBRUP1)

Thanks!

apalazzi

Hi,
How do you write the values of NBRUP1 and ENDO1 to a file - MED, RESULTAT or TABLE ? I tried everything but the only field I can get printed is DOMA...
Thanks
Andrea