For sketches, Perimeter dimension can be used to constraint total length of selected lines and/or arcs.
Perimeter constrained dimension can not be created for Ellipses, Conics or Splines.
In a active sketchHome tab > Rapid Dimension drop down > Perimeter Dimension orMenu > Insert > Sketch Constraint > Dimension > PerimeterSelect the required curves (lines/arcs) to create perimeter dimension.
Note that, Perimeter dimension will not be displayed in the graphics window but it will created as a expression. Go the expressions (Ctrl+E), notice the generated expression. It will look like “perimeter_p01” as shown.
If you try to create perimeter dimension for the curves for which it is already created then NX will show error dialog with the message that constraint already exists.
You can edit perimeter dimension value in the following ways.
Perimeter expression can not be deleted directly from expressions dialog.To delete it, Edit the sketch and from part navigator select sketch > RMB > Edit Parameters. In ‘Sketch Parameters’ dialog, select the perimeter dimension and click on delete icon.
If one or more curves are deleted that are used to create perimeter dimension then the perimeter dimension is also deleted.
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