Sector Symmetry
The Sector Symmetry feature () can be added from the model tree under Component using the Shape Optimization context menu. The feature works on domains and boundaries such that any Free Shape Domain, Transformation, Free Shape Shell, or Polynomial Shell feature will have its displacement variables extended (or overwritten) by the Sector Symmetry selection. The feature can thus be used to reduce design freedom relative to have a larger selection for (in example) a Free Shape Domain feature.
The Sector Symmetry feature will only work in conjunction with features that have the same selection dimension.
The mapping associated with the feature can fail, if the mesh is not mirrored on curved boundaries, and this failure can manifest itself as a convergence issue when solving.
Sector
Provide a Point on the revolution axis and the Direction of revolution axis. For the latter you can choose between x-axis, y-axis, z-axis, and User defined. The Transformation can either be Rotation and reflection or Rotation. The Rotation and reflection option only make sense with an even number of sectors. The number of sectors as well as the sector angle is computed automatically based on the union selection of the source features.