Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Assembly Convergence Problem

Please login with a confirmed email address before reporting spam

I have a model in which I would like to model contact between two domains. The physics of the model (boundary conditions etc) works just fine if I don't include the contact. Using "form union" at the end of the geometry sequence, the model behaves as I would expect. But if I wish to model the contact, I have changed this to "form assembly".

Having looked at a few tutorials and documentation, I know that I also need to set "create pairs" to true and set "pair type" to contact pair, then include the contact pair in the physics sequence. But this does not seem to be enough, as with these changes made, but with no other changes the model suddenly does not converge.

The converging model is attached as "g_p_reflow", while the broken model is attached as "g_p_reflow_ass".

Any suggestions?


0 Replies Last Post 24.04.2016, 17:22 GMT-4
COMSOL Moderator

Hello Matthew Aldous

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.