Two metal plates are connected with a screw and nut and then bent apart. Bolt pre-tension technology: the bolt are divided into two parts via the pre-tension section. Contact definition between all parts: - Surface Behavior: PRESSURE-OVERCLOSURE=LINEAR, - Friction coefficient = 0.1 Additional information: CalculiX CrunchiX USER’S MANUAL; Chapter 7.109 - *SURFACE BEHAVIOR CalculiX CrunchiX USER’S MANUAL; Chapter 7.101 - *PRE-TENSION SECTION Table of Contents: 00:17 Overview 00:58 CAD preparation - FreeCAD & Macro screw maker1 2 02:05 FEA model with PrePoMax 09:33 Simulation and results #FreeCAD #PrePoMax