Rosettes in Fibersim are measurement tools, much like datum features in CAD, which are necessary for determining fiber orientations across a surface within Fibersim.
Typically, Rosettes are defined natively within Fibersim by selecting a parent surface, an origin point on that surface, and a direction reference curve to establish the Rosette’s 0- or 90-degree direction.
When passing data back and forth between Fibersim and CAE analysis software, however, it is often required that consistent Rosettes be established between the programs. Rather than explicitly defining a Rosette inside of Fibersim and relying on one of its four mapping types, a Field-Based Rosette can be imported from an H5 file from CAE. In this methodology, the 0-direction for each element of the CAE mesh becomes part of the Rosette’s “field” and can be then used to define each ply’s orientation.
To import a Rosette from CAE, click File > Import > Analysis – Ply > CAE Exchange Format:
In the “create CAE Exchange Format” form, select the Analysis Exchange File, and click “View Analysis File”:
In the Analysis Rosettes section, any rosettes found in the H5 file will be listed. By right-clicking on the desired Rosette and clicking “Import Data”, the new Field-Based Rosette will be created in Fibersim and be available for any further downstream application.
This Field-Based Rosette will appear normally in Fibersim’s Rosette list, as shown below, but its origin, direction, and mapping type options will be greyed out (read-only) in the form.
Since there is no defining origin point or direction reference curve, the Field-Based Rosette will automatically display as a Field. Please note that non-Field-Based Rosettes defined solely within Fibersim can be displayed as Fields as well, but this is based on a simple visualization mesh used to show how that Rosette’s 0-direction will map across the surface. The Field displayed for a Field-Based Rosette, on the other hand, will be based on each actual CAE element’s 0-direction.