Elastic predictor → plastic corrector
Move the trial state across the yield surface. Increase hardening to see the corrected surface expand.
◯ Previous yield surface● Trial stress● Corrected stress
Normalized deviatoric coordinates: radial distance equals q in MPa. The diagram is not a σ₁–σ₂ section. Pressure is held fixed and omitted.
G = 80,000 MPa · σᵧ₀ = 250 MPa · αₙ = 0.002. Small-strain associated J2, linear isotropic hardening. Every change starts from this same history.