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Extremely simple, but unstable model?

Question asked by Willem Van Opstal on Mar 6, 2016
Latest reply on Mar 8, 2016 by Willem Van Opstal

Hi all, I''m having some trouble with a fairly simple model. A sort of bookshelf: a shelf on one rigid body. I actually don't want to use inertia relief because I don't know the consequences...

The supports are rigid. And I would like a No Penetration contact. When a bonded contact is used, no problems. As soon as I go to No Penetration-contact SW15 gives me the error of an unstable model.

 

I attached the assembly with its studies. The problems are occuring with the study: Shelf - No Screws.

Are there any advices?? Thanks!

 

Edit:

I think the No penetration contact is the problem. Check the 2nd screencapture. Where it's said 'no penetration' it just penetrates the full 100%. I don't get anything of what's happening here..

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