4. Examples

4.1. With analytical formulas

LN = FORMULE (NOM_PARA =( 'X', 'Y', 'Z'), VALE = 'Z-12.5')

LT = FORMULE (NOM_PARA =( 'X', 'Y', 'Z'), VALE = 'X-10'.)


FISS = DEFI_FISS_XFEM (MAILLAGE = MAILLAIN,

DEFI_FISS =_F (FONC_LT = LT,

FONC_LN = NL,),

GROUP_MA_ENRI = 'VOL',

INFO =2,

)

4.2. With mesh groups

FISS = DEFI_FISS_XFEM (MAILLAGE = MAILLAIN,

DEFI_FISS =_F (GROUP_MA_FISS = 'LEVSUP',

GROUP_MA_FOND = 'FONFIS',),

GROUP_MA_ENRI = 'VOL',

INFO =3,

)

4.3. With the catalog of predefined shapes

Case of a cylindrical crack:

FISS = DEFI_FISS_XFEM (MAILLAGE = MAILLAIN,

DEFI_FISS =_F (

FORM_FISS = 'CYLINDRE',

DEMI_GRAND_AXE = r,

DEMI_PETIT_AXE = r,

CENTRE = (0., l_fiss, 0. ),

VECT_X = (0., 0., 1. ),

VECT_Y = (1., 0. ,0. ),

),

GROUP_MA_ENRI =' VOL ',

INFO =1,

);

Case of a crack defined by a half-plane:

FISS = DEFI_FISS_XFEM (MAILLAGE = MAILLAIN,

INFO =1,

DEFI_FISS =_F (

FORM_FISS = 'DEMI_PLAN',

PFON =( 0., 5. ,15. ),

NORMALE =( 0., 0., 1. ),

DTAN =( 0., -1., 0. )),

GROUP_MA_ENRI =' VOL ');