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Fixing interferences issues

Altair Forum User

Hi all,

I'm performing a dynamic simulation using RADIOSS solver.

I'm creating this kind of model :

image.png.3a9de5abdcdb5dfde167319ed9a7efc5.png

I used a COMPSH material law and an SH_ORTH property in order to model an 'equivalent material', with a 4 mm thickness.

When I run the analysis, I've issues regarding penetrations in my model. Nevertheless, when I want to fix them using the Penetration Check tool, elems are totaly deformed.

Could you please help me with this model ?

Best regards,

Raphael

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Altair Forum User

Hi,

Please check the interface parameters you have used, especially the Gapmin value. The best is to specify a small Gapmin value.

Which interface you are using, if type 7 use the recommended parameters.

Also let me know whether you are trying for a self interface.

Altair Forum User

Hi George,

Yes I'm using a type 7 interface with recommended parameters :

Istf=4

IGap=2

INACTI=6

Fric=0.1

Gapmin=0.1

So, do you mean that I've to increase GapMin parameter? How can I determine the good value ?

I'm especially trying to stimulate this object impacting a rigid walk. I built this model using only 1 component, and I want to model the contact of this component itself. Am I in the good way ?