Bolt (beam) shows safety factor as 0 - Bolt connectors create beam elements (for the shank of the bolt). The Safety Factor (FOS) result for the bolts is shown as zero.
Rigid connector is not created in Nastran file for explicit analysis.
The "Check Quality for Mesh" feature does not work and prevents Autodesk Inventor Nastran from loading any dialogs. To resolve this issue, exit Inventor Nastran and then re-enter.