Creo Simulate > Reference Links > To Create Shells
  
To Create Shells
1. Click Refine Model > Shell. The Shell Definition dialog box opens.
2. Enter a name for your shell, or accept the default name. Click the color swatch adjacent to Name if you want to change the color of the shell and the name of the shell.
3. If you did not select a geometry reference before opening the dialog box, click use the regular selection method to select the geometric references now. The Reference collector displays the selected entity.
4. Select one of the Types. The options on the dialog box are different depending upon your choice. Click each type for more information.
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