CYSYM

Bulk Data Entry Specifies the number of segments, in a cyclic symmetry analysis.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
CYSYM NSEG

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
CYSYM 12

Definitions

Field Contents SI Unit Example
NSEG Number of segments.

No default (Integer > 1)

 

Comments

  1. CYSYM and CYJOIN Bulk Data Entries are required in cyclic symmetry analysis.
  2. Supported analysis types include linear static (STATIC) and normal mode analysis (MODES). For normal mode analysis, currently only Lanczos (EIGRL) and Lapack-based dense (EIGRD) solvers are supported.
  3. SPC and MPC references in the subcase section are required to be consistent for all subcases in cyclic symmetry analysis.
  4. The segment modeled by the user is defined as the basic segment with index of 1. The rest of the segments are numbered following the right-hand screw rule, where the thumb points in the positive direction of the axis and the segment indices are defined sequentially in the counter clockwise order. Figure 1


    Figure 1. Illustration of the numbering of segment indices