SolidWorks Simulation Bolt Connectors — The Pretension Cycle, Abnormal Load Warnings, and What Actually Goes Wrong
The “Abnormal bolt pretension is detected during the modifying pretension cycle” warning stops your simulation run and tells you nothing useful. The docs say check material and geometry. Forums say add contact sets. None of that is wrong, but none of it explains the actual failure mechanism. This post covers how bolt connectors work internally, why the two-step pretension analysis exists, what “abnormal” actually means in this context, and the specific setup errors that trigger it. ...