### 2.1.5. Rosettes

Rosettes are coordinate systems that used to set the Reference Direction of Oriented Selection Sets. Rosettes define the 0° direction for the composite lay-up. Coordinate systems defined in Mechanical are imported by default. Additional Rosettes can be defined in ACP. There are 5 different types of Rosettes. The origin and directions of Rosettes are given in the global coordinate system. Rosettes are independent of the mesh even if you select nodes and elements to define their properties.

One or more Rosettes can be used to set the Reference Direction for elements in an Oriented Selected Set (OSS). The Selection Method in the OSS definition controls which Rosette determines the Reference Direction for the elements. The Reference Direction for a single element is determined by a projection of the applicable Rosette on to the element. Different Rosette types can be used to define the Reference Direction.

Figure : Rosette Properties Dialog

Release 18.2 - © ANSYS, Inc. All rights reserved.