Constraining Edges

This task shows you how to add or remove constraints for a selection of edges.

• Open the Sample06.CATAnalysis document from the samples directory.

• Enter the Surface Mesher workshop.
  For more details, refer to Entering the Surface Mesher Workshop.

For a better visualization of constrained edges, you can change the color of the part.
To do this:

• Right-click Surface.1 (under Links Manager.1 -> Part1 -> Geometrical Set.1) in the specification tree.
• Select the Properties contextual menu.
• Select the desired Fill Color in the Graphic tab.
• Click OK in the Properties dialog box.

1. Click Add/Remove Constraints on Edge in the Local Specifications toolbar.

   Both the Edge Constraint dialog box and the Trap Type toolbar appear: Support: lets you select the edges on which you want to add or remove constraints. Multi-selection of edges is available. Mode: lets you specify if you want to add or remove constraints on the selected edges. Constrained: lets you add constraints on the selected edges. Unconstrained: lets you remove constraints on the selected edges. The Trap Type toolbar lets you use the trap multi-selection.

2. Select one or several constrained edges as Support.

   In this particular example, select a yellow-highlighted edge as shown below:

3. Select Unconstrained as Mode option in the Edge Constraint dialog box.

4. Click OK.

   The edge is now blue-highlighted. A Constrain Edge.1 object belonging to Geometry Specifications.1 appears in the specification tree under the Surface Mesh.1 mesh part.

5. Click Add/Remove Constraints on Edge in the Local Specifications toolbar.

   The Edge Constraint dialog box appears.

6. Select one or several unconstrained edges as Support.

   In this particular example, select a blue-highlighted edge as shown below:

7. Select Constrained as Mode option in the Edge Constraint dialog box.

8. Click OK.

   The edge is now yellow-highlighted. A Constrain Edge.2 object belonging to Geometry Specifications.1 appears in the specification tree under the Surface Mesh.1 mesh part.