To assign the Preform Surface property

For an RTM or SRIM analysis, resin is forced to flow through a cavity in which reinforcing preform (also called fiber mat) is present.

In order to run an RTM or SRIM analysis for Midplane or Dual Domain meshed models, you must specify a preform surface on the entire part.

1. In the Layers pane, deselect all layers except the layer containing the cavity elements.
2. Click (Geometry tab > Selection panel > Select All) to select the entire model.
3. Click (Geometry tab > Properties panel > Assign).
4. Click New > Preform surface to assign the Preform surface property to all model elements. In the Preform Surface dialog, either use the selected preform, edit the properties of the selected preform, or select a new preform.
5. Select the required preform for the analysis. If you click Select, you can search the supplied database for an appropriate preform to use.
6. Specify the required preform thickness option.
7. Specify the required preform orientation.
8. Click OK twice.