How to apply in Abaqus Standard a contact pair, hard contact, frictionless between two surfaces

[georgino]

I have a curved structure, in the first step i apply a moment or rotation to bend it open flat so that it comes in contact with a flat structure. In the second i want to apply this contact pair. I would have to apply a Tie constraint but this is only possible in the initial step. Any idea how i can solve this?

 

[FEA way]

Try with no separation (and rough friction) contact. It should approximately replace the tie constraint.

 

[georgino]

Unfortunately it does not work, can that be a Abaqus version. I am using version 2018
I set the contact pair as follow:
** INTERACTION PROPERTIES
**
*Surface Interaction, name=IntProp-1
1.,
*Friction, rough
*Surface Behavior, no separation, pressure-overclosure=HARD
**
** INTERACTIONS
**
** Interaction: Int-1
*Contact Pair, interaction=IntProp-1, type=SURFACE TO SURFACE
s_Surf-13, m_Surf-13
In the first step i deactivate it:
** INTERACTIONS
**
** Interaction: Int-1
*Model Change, type=CONTACT PAIR, remove
s_Surf-13, m_Surf-13
**
In the second step i activate it:
** INTERACTIONS
**
** Interaction: Int-1
*Model Change, type=CONTACT PAIR, add
s_Surf-13, m_Surf-13
**

 

[FEA way]

What do you mean when you say that it doesn't work ? The analysis doesn't complete and you get some errors or the results are different than expected ?

 

[georgino]

By that i mean: the contact does not initiate, what I expect is that in the second step the two surfaces to be bonded

 

[georgino]

Anyone know how to help me here

 

[FEA way]

I submitted your analysis in Abaqus 2022 and contact seems to be working correctly - in the second step CSTATUS shows that the surfaces are bonded.

 

[georgino]

Dear FEA way, Thank you for your feedback. Did you make any modifications to the model? If so, would you be king to send the model back to me?

 

[FEA way]

I only removed the *Depvar and *User Material keywords and replaced them with some arbitrary elastic material definition to be able to run this analysis without UMAT. But I haven't changed anything regarding contact. If you can, update your Abaqus version to the newest one (2022).

 

[georgino]

Great. Thank you!