Exactly how is AutoPIPE calculating the combined stress for a node point, equation used and individual values being applied in the equation?
For Tresca stresses, AutoPIPE calculates three values for longitudinal stress as follows:
SL1 = Axial (Neutral axis)
SL2 = Axial + Bending (Max Long if Axial is positive)
SL3 = Axial - Bending
These three values are used to calculate Tresca stresses using:
Similar approach is taken for Von Mises calculation.