Creating a midsurface with the Offset method

Note:

For most cases in which you want to create a midsurface by offsetting a surface, you should use the Modeling Offset Surface command, which is available on the Home tab→Geometry Preparation group. In general, Offset Surface is more robust and provides better, more consistent results than Offset Midsurface. See Offset Surface for more information.

With the Offset Midsurface command, a midsurface generated from a seed face is positioned between the seed face and its opposing face. The distance between the seed face and the opposing face is the thickness of the solid. The software uses the thickness of the seed face as the thickness value of the midsurface.

Note:

The offset method requires a solid of uniform thickness.

You can define any number of faces to be offset, but you first must select a seed face.

Midsurface thickness becomes a parameter of the midsurface feature

The thickness of a midsurface you create using the offset method becomes a parameter of the midsurface feature. You can use the Details panel in the Part Navigator to verify the thickness value for the offset midsurface.

The Offset method and sheet metal parts

For sheet metal parts, only the cutting edges should satisfy the definition of boundary face. The remaining internal edges should always have blends. For sheet metal parts, any face on either side of the solid can be selected as the seed face.

For a stamped sheet metal part, the cliff angle should be 90 degrees; however, depending on how the model is cut, the cliff angle can be less than 90 degrees.

How do I

Create a midsurface by face pairs

Modify the face pairs in an existing midsurface

Define a midsurface with the Offset method

Define a midsurface with the User Defined method

Insert a replacement mid-sheet into a face pair

Learn more

Creating midsurfaces before meshing

Selecting appropriate parts for midsurfacing

Creating a midsurface by pairing faces

Understanding face pair creation

Working with the Face Pair list

Understanding midsurface creation and trimming methods

Controlling midsurface display

Creating user-defined midsurfaces

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

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Creating a midsurface with the Offset method, Simcenter 3D 2021.1 Series

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