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Importing Tebis topologies as volumes in Catia

If we export topologies to Catia, it is not always possible to derive solids from them. What can we do in this case?

Catia can only derive solids from topologies if they are recognized as closed volumes. This requires that specific tolerances be maintained for boundaries and distances. Tebis provides the opportunity to specify the tolerances when generating topologies. These can thus be adjusted for each application in a targeted way.

Here's how you do it

1.

In our example, quality checking with function "Design / Analyse / Quality" shows that the component has a total of 27 distances between faces and six topology boundaries.

2.

Create the topology with a capture area that accounts for the tolerances required by Catia. Select function "Design / Top / Create". The "Parameters" dialog opens. A value of 0.100 is preset as the default for parameter "Capture area".

3.

Enter a value of 0.018, for example, for parameter "Capture area".

Hints

The link tolerance required by Catia to derive solids is 0.02. You can be more "on the safe side" with a slightly lower tolerance.

4.

Now recheck the topology using function "Design / Analyse / Quality". Enter the value in area "Topology edges" that should be accounted for in checking; in our example, this is a value of 0.018 parameter "Distance". The result shows that there are no further topology edges in the form of distances or boundaries.

Hints

The Tebis direct interfaces should always be used to achieve the best possible result when exporting data.

We recommend configuring the link tolerances and the check parameters in your database.cnf. Settings configured in database.cnf are always specified as default values. File database.cnf is located in the templates directory of your Tebis installation.

You can learn more about creating topologies by calling up the context-sensitive help in function "Design / Top / Create".

You can learn more about design quality analysis by calling up the context-sensitive help in function "Design / Analysis / Quality".


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