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#1 2020-06-26 15:54:49

marcoC
Member
Registered: 2018-06-13
Posts: 39

extract external resultant moments

I have a shell structure loaded with a momentum on some nodes. Is there the possibility to extract the external moment resultant to check if the loading is correct ? In other words, there is the analogous for external moments as for reaction forces REAC_NODA ?

Regards,

Marco

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#2 2020-06-26 20:29:39

tpa
Member
From: Denmark
Registered: 2009-04-14
Posts: 38

Re: extract external resultant moments

Yes, something like:

Calculate the fields:
reslin = CALC_CHAMP(
  FORCE=('FORC_NODA'),
  RESULTAT=reslin,
  TOUT='OUI')

Extract the group of nodes to a table:
table = POST_RELEVE_T(
  ACTION=(_F(
      GROUP_NO=('P2', 'P1'),
      INTITULE='1',
      NOM_CHAM='FORC_NODA',
      OPERATION=('EXTRACTION', ),
      RESULTAT=reslin,
      TOUT_CMP='OUI'
    ))
)

And dump the table to a text file on UNIT 8:
IMPR_TABLE(
  FORMAT='TABLEAU',
  TABLE=table,
  UNITE=8
)

- will give a table like the attached file. This was for a small beam model with a force FZ=-1000 on N2 and N1 fully constrained. This load is clear from the table as well as the reaction forces at N1.


Attachments:
Study1.table.txt, Size: 874 B, Downloads: 12

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#3 2020-06-28 10:45:01

marcoC
Member
Registered: 2018-06-13
Posts: 39

Re: extract external resultant moments

Thank you very much.
I will try.
Regards,
Marco

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#4 2020-06-29 16:42:40

marcoC
Member
Registered: 2018-06-13
Posts: 39

Re: extract external resultant moments

My problem is to verify that an external moment applied to a group of nodes is effectively applied.
If I have force loads it is simple to extract REAC_NODA and check if the sum of the external force applied equals REAC_NODA throught RESULTANTE operator.
But, if the load is a moment applied to a group of nodes, how can I perform the same check as for external force loads ?
Regards,
Marco

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#5 2020-06-30 07:46:29

sameer21101970
Member
Registered: 2019-09-06
Posts: 160

Re: extract external resultant moments

i too am working on same.

if  MZ is define by Nodale Force on Single Node (0D element ) Liasion Solid to some nodes. Then MZ is divided by number of nodes it is connecting. Understand my understanding is right.
How  to Extract Data in Graphical Form VMIS vs time, VMIS vs Displacemnt, MZ vs time, MZ vs Displacemnt.

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