#1 2008-04-03 18:17:58

Jacopo

Member

From: Colle di Val d'Elsa, Italy

Registered: 2008-02-05

Posts: 566

Shell to solid coupling 2

In the previous question about shell to solid coupling I don't know if you understand that only one shell edge is in contact with 3D element face.
In this situation how can couple the two element?
The shell element represent the midsurface and the 3D element have the thikness of the shell.

Regards
Jacopo

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Paul CARRICO

Member

From: France

Registered: 2007-12-26

Posts: 294

Re: Shell to solid coupling 2

Hi Jacopo,

I did not understand what you were expecting to !

Based on the attached picture, There's 2 simple ways to solve you're problem (I've never tested it on Code Aster but it should work) :
- you can stick shell elements on the side of your 3D elements (then you can substract the shell tickness from the  volume width) => see left figure
- or you can extend the shell elements accross the 3D elements => see right figure

Is it what you're expecting to ?

Regards

PC

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Paul CARRICO

Member

From: France

Registered: 2007-12-26

Posts: 294

Re: Shell to solid coupling 2

Hi,

Please have a look in the attached file for one of the 2 examples !

Regards

Paul

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Attachments:
test_raccord2.zip, Size: 136.47 KiB, Downloads: 660

Jacopo

Member

From: Colle di Val d'Elsa, Italy

Registered: 2008-02-05

Posts: 566

Re: Shell to solid coupling 2

Thk Paul,
A soon as possible during this weekend I'll try to solve the problem.
I think the best manner is the second way.
I try to merge the shell element inside the BRICK element "as sandwich" and after insert the shell properties only to externall shell element (not to merge element).
I start to doing this test because in contact situation shell to solid contact is not so good, so I made a solid skin on shell to improve contact.

Regards
Jacopo

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Paul CARRICO

Member

From: France

Registered: 2007-12-26

Posts: 294

Re: Shell to solid coupling 2

The second example is hereafter

Have a good WE

Paul

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Archibald Archambaud

Member

From: Clamart, France

Registered: 2007-12-03

Posts: 322

Re: Shell to solid coupling 2

Jacopo,

Perhaps you know about the Arlequin framework. This formulation allows complex coupling between different models and specially for 3D and shells.
You can take a look at the Code_Aster test cases by searching for "ARLEQUIN".

AA

Last edited by Archibald Archambaud (2008-04-04 14:40:56)

Jacopo

Member

From: Colle di Val d'Elsa, Italy

Registered: 2008-02-05

Posts: 566

Re: Shell to solid coupling 2

Thk Arcibald,
Yes I'm spiking about something similar, the command that I'm looking for is something equal to ABAQUS command SHELL TO SOLID COUPLING.
If you know ABAQUS SW you can understand what I wont doing!!!

Regards
Jacopo

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Archibald Archambaud

Member

From: Clamart, France

Registered: 2007-12-03

Posts: 322

Re: Shell to solid coupling 2

Sorry Jacopo,
I do *not* know Abaqus.... :-(
Nevertheless :

- Arlequin can do what you want

- you can certainly do "by hand" what Abaqus does to couple shell and solid using multi-points contraints

AA

Jacopo

Member

From: Colle di Val d'Elsa, Italy

Registered: 2008-02-05

Posts: 566

Re: Shell to solid coupling 2

Thk Archibald,
I try with Alerquin if i have some problem I'll try to contact you.

Rgards
Jacopo

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