Anti-rigid-body boundary conditions, SOLVE, RFY at the support, and m11_contact_audit.csv.
Indicative contact force
The reference force comes from MAPDL Student 2025 R2. The 55–60% discrepancy is a diagnostic between non-equivalent resultants, not an equilibrium tolerance or credential criterion.
Practice with fading support
Completion problem 2 / 3
✓ Worked example
Completion problem
Independent problem
Partial guidance: complete the missing engineering decision.
Contact verified through status and equilibrium
Complete the missing decision Complete the pair-orientation and initial-status check using CNCHECK.
Save and contrast
Step 4 — Solve, POST1, and CSV
CMSEL,S,bottom_nodes / D,ALL,ALL,0
CMSEL,S,top_nodes
D,ALL,UY,disp / D,ALL,UX,0 / D,ALL,UZ,0
AUTOTS,OFF / KBC,0 / NSUBST,10 / SOLVEIn POST1, sum RFY at the lower support. Write m11_contact_audit.csv with contact_closed, force_error, and n_converged. Measured reference: rfy_close ≈ 5.65 MN, study_passes = 1.
