I have a mixed solid and shell model and I'm getting a "Surface to surface contact: Unable to find normal vector" error message when I try to run the analysis. The model will mesh and run with the draft mode option checked. Any ideas?
I also got this error, except I did not have a mixed analysis - just a solid model. The "surface to surface contact" implies that the error is coming from a no penetration contact set since that is one of the three options (surface to surface, node to surface, and node to node). I was able to work around this error by modifiying the mesh controls associated with my no penentration contact sets. It turns out I had a mesh control on one of the contact faces while the other was meshed at the default size. Adding both faces to the mesh control allowed the analysis to run without this error.
You can give contact set to solidmesh and shell mesh. and try calculation.
if you have multiple contacts, isolate which one is causing the issue by excluding the other components..etc.
then take a look at the mesh. like chris said, they should be somewhat compatible.
it worn't work either way.
can you elaborate and/or post some pictures
I was working with a vinyl window model to predict structural rating under uniform pressure with an idealized FEA model focusing on the interlock section that includes most of structural members. I adjusted contact condition by reviewing results that provided some faulty deformation between two members. It might have been a contact set I switched from no P to bond and encountered this message. So I did follow you guys' recomms from both of you, and I did all options I could to identify the source of error with this message. However, the message did not disappear even after I eliminated all potential parts that would contribute to the error.
I went back to previous version of the model and did generate coarse mesh from fine mesh to see if I can get away it. It did avoided the message, but I wonder if it may comes back when I do ru with fine mesh.
No picture to provide as I lost the results.
Yes, it came back again with fine mesh. Now I am back to origin.
without seeing the model, it's really hard to troubleshoot
my guess is that there is something incompatible about the geometry and the contacts
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