May 26, 2023 at 9:59 amNicolas FontaineSubscriber
I am trying to re-do an implicit analysis I read in a paper. The author recommends "force the contacts" on the initial time step. I am using MORTAR contacts, by the way. Would you happen to know what to do to force the contacts?
Thanks a lot for your time!
May 26, 2023 at 3:30 pmAndreas KoutrasAnsys Employee
Hello Nicolas, could you please explain what "force the contacts" means? What phenomenon does this simulate?
May 31, 2023 at 6:22 amNicolas FontaineSubscriber
Thanks for your question.
We have three indenters clamping an inflated balloon catheter (search on Google: folding catheter balloon). So the contacts are between the balloon and the indenters. Ls-Dyna hasn't managed to find equilibrium yet, so I am trying all the recommendations from the paper.
May 31, 2023 at 6:29 amNicolas FontaineSubscriber
I am trying to reproduce this simulation, only the folding and the pleating part (so without the stent, the metallic frame):
The folding part is fine, the problem is for the pleating part, the non-linear solver does not find equilibrium. I guess there is a problem with my contacts or the implicit parameters.
I also followed this document to help me with the implicit analysis but without more success so far:
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