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Contact penetration

Posted May 21, 2013, 3:28 p.m. EDT Structural Mechanics 3 Replies

Jay Kim
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Hi

I have a contact model and there are two domains that one moves with a prescribed displacement and presses down the other one.

I have a contact pairs, but the results seems like one domain penetrates the other one.

I have played with penalty factor but got the same results.

Can anyone help me with this problem?

I attached the file.

Thanks,


Jay

Attachments:

3 Replies Last Post Sep 11, 2016, 9:39 a.m. EDT
Jay Kim
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Posted: 1 decade ago May 21, 2013, 11:46 p.m. EDT
I changed pairs to contact pair, but still have penetration.

COMSOL document says

"A contact pair is a pair that define boundaries where the parts may come into contact but cannot penetrate each other under deformation for modeling of structural contact and multiphysics contact."

But there is penetration.

May be it is just because visualize problem, but it looks like two domains penetrate each other.

Any help will be appreciated.

Jay
I changed pairs to contact pair, but still have penetration. COMSOL document says "A contact pair is a pair that define boundaries where the parts may come into contact but cannot penetrate each other under deformation for modeling of structural contact and multiphysics contact." But there is penetration. May be it is just because visualize problem, but it looks like two domains penetrate each other. Any help will be appreciated. Jay
Zeng Chao
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Posted: 8 years ago Sep 10, 2016, 10:38 p.m. EDT
Did anyone have solve this kind of problem? It will be great if you can share your experience for this problem.
Did anyone have solve this kind of problem? It will be great if you can share your experience for this problem.
Daniel Connelly
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Posted: 8 years ago Sep 11, 2016, 9:39 a.m. EDT
I stopped using the Comsol contact pair model and instead defined my own boundary force due to problems with convergence. For example the contact pair model is very sensitive to meshing. But in my case one of the two contact surfaces was a static, stiff, perfect plane so defining the force equation was trivial. But this is an option to consider. I didn't look at your file.
I stopped using the Comsol contact pair model and instead defined my own boundary force due to problems with convergence. For example the contact pair model is very sensitive to meshing. But in my case one of the two contact surfaces was a static, stiff, perfect plane so defining the force equation was trivial. But this is an option to consider. I didn't look at your file.

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