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From the Producibility and Splicing section of the action bar, click Stagger Origin Points .
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Select a plies group.
The plies group is divided into homogeneous sets of plies that share the same
rosette, valid orientation, reference point, and a common area of the reference
surface with another ply of the set.
- They are listed by their index in the second column (Homogeneous
set).
- Two plies that share the same common area are linked.
- Filters are now available, based on the Homogeneous sets,
Rosette, Reference point and
Orientation of the plies.
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Select a line in the dialog box to highlight the corresponding ply
in the work area.
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Click COMPUTE.
Stagger origin points are computed. When the computation is done, selecting a ply in the dialog box highlights it in the
3D area.
For
stagger index =0:
- Starting from a reference point, a geodesic line is created on reference surface
using fibber orientation (for example -45 degrees) given by rosette transfer.
- Geodesic curves parallel to a previous reference curve are created on surface with
a geodesic distance equals to Material Width plus Gap. Those parallels are
extrapolated up to the surface limits if needed.
- Intersections of these parallels with Ply.14 (rectangle in fat pink) are
computed.
- Segment for origin point (solid pink line) is defined as the centered
intersection.
- Origin point is the middle of this segment.
- For the following indices, the same computation is applied, but the first parallel
is offset by a distance equal to the Minimum Stagger
Value.
Information about the computation is given in the dialog box.
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Used the status and diagnostics from the computation to modify the parameters and restart the computation.
- Stagger index, that is, the integer value associated with a ply to define the position of its
origin point with respect to the reference point:
- Minimum Stagger Value (MSV): Distance between two stagger indices for an optimum shear strength.
- Width of the material (tape width).
- Gap between two adjacent tapes.
- Minimum nb plies must be located between two plies with the same stagger value in the same homogeneous set of plies.
- Tolerance between manual origin point and stagger origin point computed from the stagger index.
By default, - Minimum Stagger Value (MSV) is 20mm.
- Width is 100 mm.
- Minimum nb plies is 4.
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Select one or several plies in the dialog box.
- Under Point management, modify the Reference point.
- Place your cursor in Reference and select a point in the
work area to replace the current
reference point of the plies selected.
The modification applies to all the plies selected.
- Click reset default to revert to the default reference
point, that is the origin of the ply rosette.
- Modify Origin:
- Place your cursor in Origin and select a point in the work area to replace the current origin
point of the plies selected.
The modification applies to all the plies selected.
- Click reset as computed to revert to the computed origin
point.
- Modify from Stagger index provides a list of
the indices used for the computation of stagger origin points.
Select one index to change the current one.
When one ply only is selected, the list proposes only the
indices that do not lead to an error, whereas all values are
proposed when several plies have been selected.
- If required, click Export table... to export the result as a file as explained in Import, Export, and Manage External Data, both for the location and the format.
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When stagger origin points already exist in a plies group, start Stagger
Origin Points and click CHECK to verify their
validity.
You can then edit them as explained above.
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