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External Geometry

The External Boundary as defined in RS2 encompasses all other model geometry and defines the extents of the finite element mesh. NOTE:

  • An External boundary must be defined for every model; otherwise the finite element mesh cannot be generated
  • Only one External boundary can be defined for a given model.

It is best to view the External Geometry in the Geometry Geoelogy workflow tab workflow tab. To add or edit the External boundary to your model the following options in the toolbar or Geometry menu can be used:

Create External From Box

You can quickly create an External box geometry by inputting the coordinates of two opposite corners.

Creating External box geometry dialog box

Create External From Surface

You can select any surface entity and convert it to the External geometry.

Add to External

You can merge multiple volume geometries o be included as part of the External geometry. NOTE:

  • Volumes added to the External geometry must intersect the current External geometry
  • Volumes will be added using the Union operation

Set as External

You can select one geometry to set as your initial External geometry. You can always use Add to External to add to the External geometry later on.

Clear External

This option allows you to remove all External geometry. This does not delete the geometry, but rather removes the External geometry status. Removing the External geometry status allows you to delete or edit the geometry without restriction.

NOTE: External geometry cannot be deleted or edited using 3D Boolean operations other than using the Divide All Geometry or Un-Divide All Geometry tools. To delete or edit an External Geometry you must either undo your changes or use the Clear External and then delete the geometry.

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