von mises stress higher than yield stress
von mises stress higher than yield stress
(OP)
Dear all, am performing a perfect plasticity analysis on an I-beam fixed at both ends with udl of 0.5 kN/mm. the yield stress is 0.25 kN/mm2, beam length is 3000mm. From the results the Von mises stress are greater than the yield stress. what could be the problem? any ideas please? does the value of loading affect the Von mises stress? I have attached a picture of my results to this message. thanks in advance.





RE: von mises stress higher than yield stress
Use Tools -> Query -> Probe Values to check the Mises stress at the integration points.
Also refine the mesh and check the results again.
RE: von mises stress higher than yield stress
Try plotting un-averaged von-Mises stress and see if gap is minimum.