#1 2021-05-26 05:50:32

Igor Barcelos

Member

Registered: 2020-03-20

Posts: 21

Dome analysis

Hi, for the past few days I have been trying to perform a dome analysis with only the self-weight applied but I'm facing some problems. I'm using DKT element since I'm keeping QUAD4 elements. Up to this point, I have two main questions:

1) I have quite strange results when using the _ELNO field. The stress field presents no pattern and I really don't know why. This problem has been presented by Cyprien in the below video (minute 31:40) but he did not explain the reason. Any ideas? I'm also attaching an image.

https:// www. youtube.com/watch?v=7p5mQuJIZdI&ab_channel=CyprienRusu

2) When I set _ELGA results I start to have some results that at least reminds me of usual dome behavior (image attached). The problem here is that these results are in the global coordinate systems and when I try to set the cylindrical coordinate I get an error.

RESU=CALC_CHAMP(reuse =RESU,
                MODELE = MO,
                RESULTAT =RESU,
                CONTRAINTE = ('SIGM_ELNO','SIEF_ELGA','SIGM_ELGA'),
                CRITERES = 'SIEQ_ELGA',),

RESU1=MODI_REPERE(RESULTAT = RESU,
                MODI_CHAM = (_F( NOM_CHAM = 'SIGM_ELGA',
                                NOM_CMP 'SXX','SYY','SXY','SZZ',),
                                TYPE_CHAM = 'TENS_2D',),),
                                REPERE = 'CYLINDRIQUE',
                                AFFE = _F(ORIGINE = (0.0, 0.0, 0.0,),
                                         AXE_Z = (0.0, 0.0, 1.0,),),)

Error : Le TYPE_ELEMENT MEBODKT  ne sait pas encore calculer l'option:  COOR_ELGA.

I'm attaching all the necessary files. Could you please provide me some ideas?

I really appreciate it. Thank you all.

Igor Barcelos

Member

Registered: 2020-03-20

Posts: 21

Re: Dome analysis

Files here.

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Attachments:
Dome_Files.rar, Size: 320.79 KiB, Downloads: 173

sameer21101970

Banned

Registered: 2019-09-06

Posts: 354

Re: Dome analysis

below info will help you.
refer page 89,90,91,92,93 of code_asterbook-jp_aubry-20190129.pdf book

stat=CALC_CHAMP (
reuse =stat , RESULTAT=stat ,
CONTRAINTE = (
’SIEF_ELNO’ ,
’SIPO_ELNO’ ,
’SIPM_ELNO’ ,
’SIGM_ELNO’ ,
),
FORCE = ( ’REAC_NODA’ ) ,
);

refer page 89,90,91,92,93 of code_asterbook-jp_aubry-20190129.pdf book

#U4.85.01
stat2=POST_CHAMP (
RESULTAT=stat ,
GROUP_MA = ( ’panel’ , ) ,
EXTR_COQUE=_F (
NUME_COUCHE=1 ,
NIVE_COUCHE=’SUP’ ,
NOM_CHAM = ( ’SIGM_ELNO’ , ) ,
),
);
statsup=CALC_CHAMP (
RESULTAT=stat2 ,
GROUP_MA = ( ’panel’ , ) ,
CRITERES = ( ’SIEQ_ELNO’ , ’SIEQ_NOEU’ , ) ,

Igor Barcelos

Member

Registered: 2020-03-20

Posts: 21

Re: Dome analysis

Thanks a lot, Sameer, that really solved the problem.

Last edited by Igor Barcelos (2021-06-07 14:59:50)