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Re: Modal analysis using substructuring strategy
- Quentin
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10 years 1 week ago #8174
by Quentin
Re: Modal analysis using substructuring strategy was created by Quentin
Hello guys !
It's been a while, and my model is now nearly complete. Still I got recently new errors I don't get. Which are :
- ALGELINE5_23
- ALGELINE3_35
Those errors appears because Aster don't succeed in calculating all the mode on each substructure :
Aster is actually trying to calculate in this frequency range [ 2.96647E+02; 2.26132E+03]. Theoretically there is 11 modes, and Aster can calculate only 10.
Anyway, by ignoring those alarm, my results have rigid body movement in the calculation.
I have already verified that my boundaries are right on each substructure. I have no problem with the other substructure. Only that one.
Do you guys have any idea, where it came from ?
See you,
Quentin
It's been a while, and my model is now nearly complete. Still I got recently new errors I don't get. Which are :
- ALGELINE5_23
- ALGELINE3_35
Those errors appears because Aster don't succeed in calculating all the mode on each substructure :
EBR = CREA_ELEM_SSD(CHARGE=(CHBR, ),
CARA_ELEM=CBR,
MODELE=MOBR,
CHAM_MATER=MABR,
CALC_FREQ=_F(STOP_ERREUR='NON',
NMAX_FREQ=10,
APPROCHE='REEL',
OPTION='PLUS_PETITE',),
BASE_MODALE=_F(TYPE='CLASSIQUE',),
INTERFACE=(_F(NOM='INTBRB',
GROUP_NO=('intfbB', ),
TYPE='CRAIGB',
FREQ=1.0,),
_F(NOM='INTBRF',
GROUP_NO=('intfbF', ),
TYPE='CRAIGB',
FREQ=1.0,),
),
INFO=1,
SOLVEUR=_F(RENUM='METIS',
STOP_SINGULIER='OUI',
ELIM_LAGR='NON',
NPREC=8,
METHODE='MULT_FRONT',),
)Aster is actually trying to calculate in this frequency range [ 2.96647E+02; 2.26132E+03]. Theoretically there is 11 modes, and Aster can calculate only 10.
Anyway, by ignoring those alarm, my results have rigid body movement in the calculation.
I have already verified that my boundaries are right on each substructure. I have no problem with the other substructure. Only that one.
Do you guys have any idea, where it came from ?
See you,
Quentin
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