PRIMER 22.1

Scale Fold

Scale Fold

The scale fold is used for shrinking or enlarging parts of the origami.

The scaling is done in the local co-ordinate system of the fold, NOT the global co-ordinate system.

To help you visualise the local co-ordinate system the axis triad is drawn on the airbag.

The nodes/elements that you want to scale are selected in the normal way using sets and layers as required.

You can give separate scale factors for the X, Y and Z axes of the fold.

Examples of scale fold
The yellow portion of the airbag has been selected using the sets and layers option (the fold nodes are shown highlighted by yellow stars).

The local co-ordinate system is shown on the diagram.

In this example the fold point is at the default (0) position.

In this example the fold point has been moved to the top left of the yellow portion by PICK ing a new fold point.
In this example the fold coordinate system has been changed by using the LOCAL SYSTEM function. Note that the directions of the local axes have changed but the origin is still at 0. To change the origin a new fold position would need to be picked.