Use TB,BISO with Sy=250 MPa; compare uy_plastic with uy_geom.
Version-dependent nonlinear response
Counts and setup are contractual; iterations and response may vary with solver, release, and platform.
Practice with fading support
Completion problem 2 / 3
✓ Worked example
Completion problem
Independent problem
Partial guidance: complete the missing engineering decision.
Nonlinearity identified by mechanism
Complete the missing decision The curve departs from baseline. Decide which evidence separates geometric and material effects.
Save and contrast
Step 4 — Controlled plasticity
TB,BISO,1,1
TBDATA,1,250E6,0 ! Sy = 250 MPa, tangent = 0 (perfectly plastic)Repeat the ramp with NLGEOM,ON. Compare uy_plastic against uy_geom: plastic_dev_ratio must be ≥ 5% . Document whether yielding amplifies deflection beyond the geometric effect alone.
Figure 6. Equivalent stress in the elastoplastic case (PLNSOL,S,EQV).
Step 5 — Read convergence in .out
Minimum checks before accepting results:
n_converged = n_substeps in POST1.No unresolved “Solution not converged” lines.
Global equilibrium < 0.5% in all three cases.
Curve with 10 points in m10_load_curve.csv.
