About Surfacic Flanges

This topic provides details about hybrid design.

In a hybrid design context, when the edge of a part or the surfacic flange is defined by a sketch, they follow the hybrid design aggregation rules.

For more information about Hybrid Design, see Part Design User's Guide: Hybrid Design.

It is possible to intersect two surfacic flanges on a web. This means that you can choose a web as a support with an existing surfacic flange that goes through the new surfacic flange.

The intersecting flanges are automatically detected, and the geometry of the first flange is relimited to enable the creation of the second flange; the unfolded view is computed accordingly. You can then remove the sharp vertex in the corner by creating a corner relief or a cutout at the intersection of the surfacic flanges.

Different topological cases may be encountered. In all cases, the common ribbon is removed and the current surfacic flange is cut in a natural way. A few examples are shown below:

Intersecting surfacic flanges with same bend radii and angles (general case)

Intersecting surfacic flanges with different bend radii

Intersecting surfacic flanges with different bend radii and angles

Important: The characteristic curves of the previous adjacent flanges are not split. The adjacent flanges may include joggles, provided that the surfacic flange is not trimmed through a joggle runout.

Any cutout on the web is taken into account to create the surfacic flange sides.

For example, if you create a cutout on the web and then create a surfacic flange with standard sides, the latter is computed from the web profile including the cutout.

For optimization reasons, we advise you to first create a sketch with the required shape and then create the surfacic flange.

You can create several surfacic flanges on a web already containing cutouts by selecting the web and the same support plane.

In such a case, each surfacic flange can be opened and modified independently from the others. Yet, if the support of one of the surfacic flanges was to be modified, the change would be propagated to the other surfacic flanges.