Radial linear pattern grouping allows you to force OptiStruct to create variables that consolidate the perturbations of active grids along planes running radially from a central axis. This can be useful for assigning radial pattern groupings through the thickness of a solid model.

For a radial linear pattern grouping (TYP = 6), OptiStruct generates a series of planes that run radially away from, and in the same plane as, the first vector. The radial linear pattern grouping is essentially the linear pattern grouping combined with the radial pattern grouping. The anchor point can be located anywhere, but the first vector must be collinear with the desired central axis for the radial planes.

One and two planes of radial linear pattern grouping (TYP = 26 and 36) can be created by using the second vector to define the planes of symmetry. The symmetry planes are assigned in a manner similar to that for two and three plane radial symmetry.