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Ansys Learning Forum Forums Discuss Simulation General Mechanical Force/Moment Reactions at Contact (Weld Seam Evaluation: nominal stress concept) Reply To: Force/Moment Reactions at Contact (Weld Seam Evaluation: nominal stress concept)

dlooman
Ansys Employee

Yes, unfortunately the postprocessing commands aren't written to the ds.dat file.  Only the preprocessing and solution commands.  I'm quite sure Mechanical is doing something like spoint/fsum.  The centroid is probably computed based on the average node location.  You could double check it with a commands object using APDL commands, but I doubt it would differ very much.  You're assuming the stress varies linearly through the top flange thickness and the section.  Is it possible that assumption is introducing a discrepancy?