Several surface-to-surface contact interaction or only one ?

[MatthieuM]

Hello,

I have to model a 3D metallic structure in which several (around 30) slave surfaces are in contact with several master surfaces (around 30 too).
I use "hard contact" for normal behaviour and "penalty" for tangential behaviour.
Each slave surface is composed of approximately 10 000 3D element, each master surface of 5 000 3D element. So the whole part is complex and calculation time will be high.

My question is about optimizing the calculation time :

Is it better to create 30 surface-to-surface interactions (one for each slave/master couple)? or only one interaction which take into account all of my surfaces ?

Thank you for your time,

Matthieu

 

[Mustaine3]

Is there any reason not to use General Contact instead of defining so many contact pairs?

 

[MatthieuM]

I thought, because of my problem's size, that surface-to-surface with smaller contact pairs could decrease the calculation time ?

 

[Mustaine3]

I'm not sure if there would be a large difference, but I would assume that 30 master and their 30 slave surfaces are the fastest during the contact checks.

 

[MatthieuM]

Ok, thank you for your response

 

[ZhDmitr]

Hi,
Could you please tell me how to get such type of connection?
Thanks!