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Mastery ~8 min · ~0 min remaining

M11 mastery test

Assessment of CONTA/TARGE, CNCHECK, gap, and interpreting reactions.

Exit checklist

  • CONTA/TARGE pair with consistent 16+16 counts.
  • CNCHECK run before each SOLVE.
  • Case 1: contact_closed = 0.
  • Case 2: contact_closed = 1 and rfy_close ≈ 5.65 MN.
  • Case 3: documented initial penetration of 0.1 mm.
  • study_passes=1 in a clean run.

Technical traceability

Commands: CONTA174, TARGE170, ESURF, REAL, KEYOPT, CNCHECK, NLGEOM, NSUBST, *GET. Reference: Contact Technology Guide. Inherited from: M10 (substeps, NLGEOM). Next: M12 idealized bolted joints with CERIG.

Mastery assessment

Show that you can do it without hints

You need at least 80% and every critical check correct. You can retry without a limit; each attempt gives you a focused review path.

6 checks

Competency

Model and verify a 3D contact pair with prior diagnosis and CSV evidence.

Expected evidence

CONTA/TARGE with n_conta=16, consistent contact_closed, rfy_close≈5.65 MN, and study_passes=1.

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1.What does CNCHECK provide before SOLVE in a contact pair? Critical
2.n_conta=0 after ESURF. Most likely cause? Critical
3.With an open gap, why restrict UX and UZ on the top face? Critical
4.How many CONTA174 elements does the base deliverable contract require? Critical
elements
5.Enter |rfy_close| measured (N) in the case of closure with disp = -0.0012 m (1 significant digit ok). Critical
N
6.Case 1: disp=−0.2 mm with gap=0.5 mm. What contact_closed value is expected?

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View complete module Download m11-kit.zip