Radial (2D) pattern grouping allows you to force OptiStruct to create beads in a
radial direction extending outward from a central axis.
This can be very useful for optimizing circular parts in which radial reinforcements are
desired.
For radial (2D) pattern grouping (TYP=4, 14,
24, and 34),
OptiStruct generates
shape variables that run radially away from a
central axis defined by the first vector. Radial
beads, at their closest point to the central axis,
have a width equal to the minimum bead width
parameter. The width of the beads increases with
distance from the center. There is no limit on the
bead length. The anchor point can be located
anywhere, but the first vector must be collinear
with the desired central axis for the radial
beads. The simple radial (2D) pattern grouping
(TYP=4). Figure 1. TYP=4: Simple Radial (2D) Pattern
Grouping
For one plane radial (2D) pattern grouping (TYP=14), the
radial patterns are reflected about a plane
located at the anchor node and defined by the
first vector. One plane radial symmetry ensures
that nodes equal distances above and below the
plane of symmetry will be grouped into the same
variables. Figure 2. TYP=14: One Plane Radial Pattern
Grouping
For two and three plane radial (2D) pattern grouping (TYP=24
and o), two symmetry planes are determined by the
first and second vectors. Figure 3. TYP=24: Two Plane Radial (2D) Pattern
Grouping Figure 4. TYP=34: Three Plane Radial (2D) Pattern
Grouping
