Imprinting edges of intersecting surfaces

For models that have intersecting polygon faces, you can use the Face-Face Intersection command to create and imprint a new polygon edge at the location where the faces intersect. This new command complements the existing Imprint command, which projects curves and edges onto faces to produce new edges on the target face.

The Face-Face Intersection command:

• Searches for intersecting faces in the selected polygon bodies or faces.

• Produces edges on the intersecting faces or bodies where the intersection occurs.

• Optionally stitches the faces where the intersection occurs.

Example: imprinting intersecting faces

This model is comprised of a series of intersecting, polygon bodies with unstitched edges where the faces of the different bodies intersect.

The original model is comprised of a series of intersecting polygon sheet bodies. The unstitched edges are shown in magenta.	The Face-Face Intersection command imprints and stitches the intersecting faces. The Information window lists the total number of imprinted and stitched curves. The stitched edges are shown in cyan.	Here, one of the intersecting polygon bodies is translucent so that you can better see the imprinted edges where the faces intersect.

Using the snap distance tolerance for imprinted edges

The Snap Distance option in the Face-Face Intersection dialog box controls whether the software imprints the edge or curve onto one of the faces where the intersection occurs.

• If the distance between the end of the edge or curve is less than the specified Snap Distance value, the software imprints the edge or curve.

• If the distance between the end of the edge or curve is greater than the specified Snap Distance value, the software does not imprint the edge or curve.

Controlling whether the intersecting faces are stitched

You can use the Stitch check box in the Face-Face Intersection dialog box to control whether the software stitches one edge from each intersecting face to create a common edge. Selecting the Stitch option helps ensure that any meshes that you create on the intersecting faces have continuity where they intersect and do not include any free element edges.

Special considerations for faces that include scar curves

A scar curve lies either completely in the interior of a face or touches an outer boundary of a face. The Face-Face Intersection command cannot create intersections on faces that include scar curves. If you select a face that includes a scar curve, the software excludes the face from the intersection process and places it in a special output group in the Simulation Navigator.

Where do I find it?

Application	Pre/Post
Prerequisite	A FEM file as the work part and displayed part
Command Finder	Face-Face Intersection

Learn more

Imprinting edges or curves onto faces

Imprinting circular edges on a face

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Related Topics

Generating surface wrap bodies and meshes

Imprinting edges of intersecting surfaces, Simcenter 3D 2021.1 Series

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