I am trying to analyze gothic vault with karamba 3d, with and without rib.
-First I have a question about the resolution of the mesh, I use mesh to shell as on the picture below and I was wondering if the resolution that I use is ok to get the order of stresses in the vault ? Because I have seen that the values change a lot with the resolution of the mesh.
-Second, I look at the princ stress 2 to get an idea of compression values, and I see some blue parts that seems to bee in small tension, is it because of the mesh ?
Also, the maximum and minimum value seems very hight, I think it is because of the concentration of stress in the support, maybe I could ignore those values for my analysis ?
I’m only architecture student, and I haven’t a lot of experience in those question
Thanks a lot in advance for your help,