I am unsure what conclusions to draw regarding the stress concentration in the attached picture.
The picture shows a sectioned view of Von-Mises. The peak stress at the surface region indicated is around 415 Mpa, so about 60Mpa above the yield strength. As can be seen, the stress decreases very rapidly through the thickness of the material, reaching acceptable levels a mere millimeter or so beyond the surface.
The part in question is 12.5mm thick S355.
Considering the material thickness and the acceptable stress just beyond the surface, is this stress really a concern?
How should I conclude the results in this region?
Much appreciated,
Peter
It's somewhat hard to tell with the image given, but I does look like your stress gradient is on the steep side. However, this doesn't necessarily mean that your high stress values are due to a singularity. Did the stress results in that area converge? Can you provide more information on the model definitions (load, constraints, analysis goals, etc.)? Can you provide more information about the design and its intent? Are you using FEA to help hone in on a good design prior to doing physical testing, or are you trying to avoid any physical testing by using FEA?