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#1 2021-03-03 10:45:05

Sellin
Member
Registered: 2014-01-14
Posts: 28

Modelling elements with COQUE_D_PLAN

Hello,

I want to use COQUE_D_PLAN affectation. I am using Code_Aster Windows V14.4.0 and it seems this command with AFFE isn't known by CA.
Does this command still exist or maybe it evolved in another name?
Thank you in advance,

Jean-Philippe

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#2 2021-03-08 10:51:35

Sellin
Member
Registered: 2014-01-14
Posts: 28

Re: Modelling elements with COQUE_D_PLAN

Hi,

Does any one have any idea how to model a thin shell in a D_plan modelling. I would like to model a thin wall in contact with soil in 2D_PLAN. Previously it seems D_PLAN_COQUE was available but is now obsolete.
Perhaps I could manage it with a beam modelling but i can't make it work.
Do you have an idea?
Best regards,

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#3 2021-03-08 12:30:22

Johannes_ACKVA
Member
From: Ingenieurbüro für Mechanik, DE
Registered: 2009-11-04
Posts: 735
Website

Re: Modelling elements with COQUE_D_PLAN

hello

it seems COQUE_D_PLAN has been eliminated, see here:
https://www.   code-aster.org/forum2/viewtopic.php?id=20066

Using beams is not the same!! because of the effect of lateral contraction. The way is to make a model of just 1 row of COQUE_3D elements.
If you want to keep your old meshs of SEG3 line elements, you extrude them in Salome Mesh module to 1 row of QUAD8 elements. Then in .comm:

quad8  =LIRE_MAILLAGE(  )

# QUAD8 are changed to QUAD9 elements, this command is not necessary if your mesh has already center-nodes
quad9 =CREA_MAILLAGE(MAILLAGE=  quad8,
                                                 MODI_MAILLE=   _F(TOUT='OUI',   OPTION='QUAD8_9',  PREF_NOEUD='NT',),)
                                

Best regards

Johannes Ackva

*** NEW: all Code-Aster courses now  as Video and Webinar courses  ***


Ingenieurbüro für Mechanik
D 91717 Wassertrüdingen / Germany

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#4 2021-03-09 16:41:45

Sellin
Member
Registered: 2014-01-14
Posts: 28

Re: Modelling elements with COQUE_D_PLAN

Dear Johannes,

Thank you for your answer. If I understand correctly, I must generate a 3D_coque element in the orthogonal direction of the D_PLAN. Am I correct? I will try it

Thank you,

Jean-Philippe

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#5 2021-03-10 19:52:26

Johannes_ACKVA
Member
From: Ingenieurbüro für Mechanik, DE
Registered: 2009-11-04
Posts: 735
Website

Re: Modelling elements with COQUE_D_PLAN

yes, you are correct

Best regards

Johannes Ackva

*** NEW: all Code-Aster courses now  as Video and Webinar courses  ***


Ingenieurbüro für Mechanik
D 91717 Wassertrüdingen / Germany

www.code-aster.de                                                Training & Support for NASTRAN and CODE-ASTER

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