Fixing interferences issues
Altair EmployeeHi all,
I'm performing a dynamic simulation using RADIOSS solver.
I'm creating this kind of model :
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
Answers
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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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I'll try right now this kind of interface.
Do I have to try with the same parameters than Type 7 ?
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Hi George,
I tried with Type 7 and Type 24, and it still doesn't work.
When I start the calculation, I always have a warning regarding initial penetration.
Also, please find attached the concerned model.
Thank you for your help
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Hi,
Modified the contact parameters.
Please try with the model attached.
<?xml version="1.0" encoding="UTF-8"?>
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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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