Summary and evidence

Evidence of learning

• 02_geometry_selections.mac executed from a clean session.
• m02_selection_audit.csv with passes=1.
• 02_challenge.mac completed for the beam of 1.2 m.
• Diagnostic table of the five defects of 02_bug_hunt.mac.
• Brief explanation of why a geometric selection is more stable than a list of IDs.

Validation checklist

• I distinguish entities from the solid model and the finite element model.
• I can anticipate the effect of S, A, R and U.
• Explicitly defined and restored SELTOL.
• I created fixed_nodes and tip_nodes without IDs.
• Restored CSYS,0 after using the 11 system.
• I built tip_top_nodes as an intersection of two components.
• I checked that fixed_nodes and tip_nodes (non-overlapping)
• I verified that ALLSEL,ALL retrieves all nodes.
• The challenge generates a CSV with passes=1.
• I did not apply loads or solve the model in this module.

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Technical traceability of M02

Content contrasted with ANSYS mechanical APDL Command Reference 2024 R1: ALLSEL, CM, CMSEL, CSYS, ESEL, LOCAL, NSEL and SELTOL; and with chapter 3 of ANSYS Mechanical APDL Modeling and Meshing Guide.