Bolt Selection
The Bolt Selection subnode is automatically added as a default node to the Bolt Pre-Tension node. It is used for selecting the bolts. One Bolt Selection node is required for each bolt.
Boundary Selection
From the Selection list, choose the boundaries to define a cross section of a single bolt. This cross section must be an internal boundary. It is the section where the stress in the bolt is measured.
Bolt Selection
Enter a Bolt label. The default is Bolt_1. The label is used for identification during postprocessing.
Symmetry Detection
If a bolt is cut by a symmetry plane, the force in the modeled part is only half of the force in the real bolt. When Automatic symmetry detection is selected, this is compensated for. The program will then automatically detect when a bolt is located in a symmetry plane, and apply corrections.
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If the input of the pre-tension load in the parent node is by Pre-tension force, the given force is interpreted as force for the whole bolt.
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All results are given for the whole bolt.
When Automatic symmetry detection is cleared, the inputs and outputs are based on the modeled cross section area.
As default, Automatic symmetry detection is selected. When opening models created in versions prior to 5.3, the check box is cleared in order to be compatible with the previous behavior.
Pre-tensioned Bolts in the Structural Mechanics Modeling chapter.
Location in User Interface
Context Menus
 Solid Mechanics>Bolt Pre-Tension>Bolt Selection
Ribbon
Physics tab with Bolt Pre-Tension selected in the Model Builder tree:
Attributes>Bolt Selection