Mental model — Head, thread, and connector
- Head:
head_pilot+head_depat y=2·plate_t+gap. - Thread:
thread_pilot+thread_depat y=plate_t. - CERIG: use
UXYZfor the dependentSOLID185translations. Pilot rotations remain in the equations to transmit moments. - Standards: MAPDL provides forces; code-based sizing is performed externally.