Calculatin Von Mises norm in DKT elements

Hello everybody again,

I am trying to simulate the mechanical deformations of a structure with 1d, 2d and 3d elements. Once I have solved the problem, I don't have problems to calculate the Von Mises norm in 3d elements. However, the problem is with the 2d elements, DKT elements in this situation. Does anybody know how to calculate Von Mises norm for this type of elements? I have already found an answer in the Code_Aster forum, but it is not working.

Thank you very much.

Regards,

Tere.

see doc U2.02.01

You can calculate the v Mises stress by

MODELE=AFFE_MODELE(MAILLAGE=MAILLAGE,
VERIF='MAILLE',
AFFE=_F(GROUP_MA='ELM',
PHENOMENE='MECANIQUE',
MODELISATION='DKT',),);
....
result_X=MECA_STATIQUE(MODELE=MODELE,
CHAM_MATER=affemat,
CARA_ELEM=cara,
EXCIT=(_F(CHARGE=FIX,),
_F(CHARGE=X_FORCE,),),);
....
result_X=CALC_ELEM(reuse =result_X,
RESULTAT=result_X,
OPTION=('SIGM_ELNO_DEPL','EQUI_ELNO_SIGM',),);

These are stresses par element aux noeds. Is this what You
were looking for?

Johannes

Yeah, this is what I am looking for. I will try this way.

Thank you very much.

Regards,

Tere.