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#1 2016-08-18 14:58:47

konyaro
Member
From: Genève
Registered: 2016-04-02
Posts: 262

[SOLVED] rotation > 180°

Bonjour,
J’essaie d’effectuer une rotation de plus de 180° sur une extrémité d’un élément POU_D_T_GD dans une analyse statique non linéaire. Cela se passe bien jusqu’à 179.99xxx° puis la simulation échoue après avoir atteint la limite de pas de temps PAS_MINI.
Est-ce une limitation de cet élément ?

J’arrive à contourner ce problème en imposant directement un DDL_IMPO composé d’une FORMULE sur les nœuds à déplacer.

Par contre je n’arrive pas à laisser des nœuds libres en rotation sur plus de 180°. Voyez-vous une méthode qui me permette de contourner cette limitation ?

Merci d’avance pour vos commentaires

Last edited by konyaro (2016-09-02 09:39:54)


Attachments:
RotV12.zip, Size: 15.82 KiB, Downloads: 259

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#2 2016-08-30 15:53:16

konyaro
Member
From: Genève
Registered: 2016-04-02
Posts: 262

Re: [SOLVED] rotation > 180°

Same message in english:
------------------------------------------------------------------------------------------------------------------------------------------------
Hello,
When I apply a rotation greater than 180° on a node of a POU_D_T_GD element in a nonlinear static analysis, the simulation stops just before 180°. Is it a limitation of this element?

I managed to apply a larger rotation using a DDL_IMPO with a FORMULE inside. Nevertheless my real problem is to let that node free in rotation on more than 180° and it does not work with a POU_D_T_GD  element. Does anybody see a way to do that?

Thank you in advance for your advice


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#3 2016-09-01 07:47:55

SolFox
Member
Registered: 2016-08-31
Posts: 1

Re: [SOLVED] rotation > 180°

konyaro wrote:

Same message in english:
------------------------------------------------------------------------------------------------------------------------------------------------
Hello,
When I apply a rotation greater than 180° on a node of a POU_D_T_GD element in a nonlinear static analysis, the simulation stops just before 180°. Is it a limitation of this element?

I managed to apply a larger rotation using a DDL_IMPO with a FORMULE inside. Nevertheless my real problem is to let that node free in rotation on more than 180° and it does not work with a POU_D_T_GD  element. Does anybody see a way to do that?

Thank you in advance for your advice

Yes I think it is a limitation that you can go past 180, I noticed it too.

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#4 2016-09-02 09:38:49

konyaro
Member
From: Genève
Registered: 2016-04-02
Posts: 262

Re: [SOLVED] rotation > 180°

Ok, thank you for your answer. The POU_D_T_GD show strange behaviours, sometimes even before 180°...

Richards gave me the solution in another post:

RichardS wrote:

Hi,
just as a side note, since V13 LIAISON_SOLIDE is possible to be used also with large rotations by specifying TYPE_CHARGE='SUIV'.

Best,
Richard

Last edited by konyaro (2016-09-02 09:39:21)


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