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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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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.

 

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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 ?

 

Thanks

Raphael

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Hi,

You can try reducing the Gapmin value. Also instead of Type 7 you can try modelling it with Type 24 interface also.

Please share the model file if the issue persist.

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Hi George, 

 

Thank you very much, the model is running as I wanted !

 

Nevertheless, I've another question. How is it possible to orientate each surface of the model independently ? 

 

Thanks for your support

Raphael 

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