Defining the Material Excess

This task shows you how to define the material excess for both EEOP and MEOP,
that have the same or different numbers of contours.
An EEOP / MEOP couple must already exist.
Open the MaterialExcess1.CATPart document.
 

EEOP and MEOP with the Same Number of Contours

  1. Click Material Excess in the Manufacturing toolbar.
    The Material Excess dialog box opens.

  2. Select the features where to define the material excess
    It can be a ply, a sequence, a plies group, cut-pieces, or a stacking.
    In our scenario, we selected the stacking.
    • Either select one entitiy in the graphic area or the specification tree.
    • Or click to access the multi-selection dialog box.

      Click to access the Stacking Management in selection mode.
    • The name or the number of selected entities is displayed in the main dialog box.

  3. In the Engineering EOP frame, select the EEOP.1 in the specification tree.

  4. In the Manufacturing EOP frame, select the MEOP.1 in the specification tree.

  5. Optional: Select the Apply to cut-pieces check box.
    The material excess is created for the cut-pieces found in the selected plies, if they exist.
    Otherwise, the material excess is computed on the plies themselves.

  6. Click OK to define the material excess.
    Plies are exceeded from the EEOP to the MEOP.
    In the specification tree, the element (identified as Material excess.xxx) is displayed under each ply.
You can edit the material excess in order to change the Engineering EOP or the Manufacturing EOP.

  1. Double-click the Material Excess feature in the specification tree.
    The Material Excess dialog box is displayed.

  2. Select other elements as EEOP or MEOP.

  3. Click OK to perform the modification.
If the material excess has been created on a butt splice zone with a Gap Offset,
the Gap Offset dialog box appears when you edit the material excess.

EEOP and MEOP with a Different Number of Contours
  Open the MaterialExcess_SeveralContours1.CATPart document.
In this model, the EEOP contains an outer and an inner contour, when the MEOP contains only the outer contour.
Engineering definition of ply.1 Manufacturing definition of ply.1

  1. Click Material Excess in the Manufacturing toolbar and select the features to porcess as explained above.

  2. In the Engineering EOP frame, select the EEOP.1 in the specification tree.

  3. In the Manufacturing EOP frame, select the MEOP.1 in the specification tree.

  4. Click OK to define the material excess.
    Plies are exceeded from the EEOP to the MEOP.
    In the specification tree, the element (identified as Material excess.xxx) is displayed
    under each ply and contains only one contour.
  • This scenario corresponds to the process in which the cut-outs (inner contours) are removed from
    the manufacturing definition of the plies. The manufacturing plies will be nested,
    cut and put on the mold without the cut-outs.
  • In some cases, the MEOP can contain more contours than the EEOP,
    for instance when tooling tabs are added to the manufacturing geometry of the plies.