Head, thread, and connector · M12 · Learn to Program Ansys APDL Simulations

Head, thread, and connector

Two pilot nodes, absorbed regions, MPC184 vs. BEAM188, and an external code check.

Mental model — Head, thread, and connector

Two plates with CERIG pilot nodes and a 1D connector — Figure 1. Head on the upper face; thread on the lower interface; connector between pilots.

Head: head_pilot + head_dep at y=2·plate_t+gap.
Thread: thread_pilot + thread_dep at y=plate_t.
CERIG: with ALL on SOLID185, only active translations (UX, UY, UZ) are coupled.
Standards: MAPDL provides forces; code-based sizing is performed externally.

Quick check

What happens when CERIG,pilot,ALL is applied to SOLID185 nodes?

MAPDL couples only the solid’s active DOFs (UX, UY, UZ). ALL fails because the solid has no rotational DOFs in the model. ALL automatically disables the 1D connector.