Polygon body update process

Whenever possible, the software uses a limited, or surgical update process to update polygon geometry at the face level rather than at the polygon body level. This limited update process is designed to minimize the amount of polygon geometry that is affected by changes to the underlying CAD geometry. When a limited update is not possible, the software reverts to a full polygon geometry update process. In the full update process, the software deletes and recreates all polygon bodies and any manual modifications to the polygon geometry are not preserved.

During the limited update process:

• Fewer meshes or polygon faces are deleted and recreated.

• Manual modifications that you make to the polygon geometry are preserved, as long as the software does not need to recreate the face on which those manual modifications are defined.

• Fewer mesh mating conditions and Stitch Edge recipes are recreated and replayed.

• Any new or modified polygon faces are automatically added to an output group in the Simulation Navigator.

Polygon geometry update log

The software creates a CAE Polygon Body Update log file that tracks polygon geometry updates. This log file lists whether the software performed a surgical or full update of the polygon geometry. If the software was unable to perform a surgical update, the log also lists the reason why the surgical update was not possible. You can use the Show Polygon Body Update Log customer default to control whether the CAE Polygon Body Update log displays each time the software updates the polygon geometry.

Where do I find it?

Menu	File→Utilities→Customer Defaults
Location in dialog box	Simulation→Pre/Post→General→FE Model Create tab

Learn more

Geometry abstraction and polygon geometry

Polygon geometry

Polygon geometry versus lightweight facet bodies

Understanding CAD issues reported during FEM creation

How edges are represented in a solid model

Modeling tolerance values

Comparing geometry idealization and geometry abstraction

Understanding the geometry abstraction process

Displaying suppressed edges in polygon geometry

Checking CAE model consistency

Naming of polygon bodies, meshes, and properties

Tools for identifying and repairing polygon body problems

Synchronizing polygon body names and attributes to the CAD geometry

Controlling polygon body tessellation

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Related Topics

Generating surface wrap bodies and meshes

Polygon body update process, Simcenter 3D 2021.1 Series

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