USET

Bulk Data Entry Defines a set of degrees-of-freedom.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
USET SNAME G1 C1 G2 C2 G3 C3

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
USET U6 564 4 765 1456 8 5

Definitions

Field Contents SI Unit Example
SNAME Set name.
≠ U6 or ZEROU6
USET will be ignored.
= ZEROU6
The degrees-of-freedom are omitted from the set.
(Character, only U6 or ZEROU6 are allowed)
Gi Grid or scalar point identification numbers.

No default (Integer > 0)
Ci Component numbers.

(Integer zero or blank for scalar points, or up to 6 unique digits (0 < integer ≤ 6) may be placed in the field with no embedded blanks for grid points. The components refer to the coordinate system referenced by the grid points.)

Comments

  1. A maximum of 18 degrees-of-freedom can be defined on one USET entry.
  2. For normal modes analysis with the Lanczos eigensolver, the case control command RESVEC=YES must be used to create residual vectors based on the USET DOF. If the AMSES or AMLS eigensolvers are used, the residual vectors will always be created. The residual vectors are calculated using the unit load method.
  3. The residual vectors are then exported together with the eigenvectors to the H3D, PUNCH, and OUTPUT2 files. If stress output is requested, the stress state for each mode is output to the H3D, PUNCH, and OUTPUT files.
  4. When the SPSYNTAX setting on the SYSSETTING I/O Option is set to CHECK (default) or STRICT, it is required for grid/component pairs (G#/C#) that the component be 0 or blank when the grid reference is a scalar point (SPOINT), and that the component be > 1 when the grid reference is a structural grid point (GRID). When SPSYNTAX is set to MIXED, it is allowed for grid/component pairs (G#/C#) that the grid reference be either a scalar point (SPOINT) or a structural grid point (GRID) when the component is 0, 1 or blank; interpreting all of these as 0 for scalar points and as 1 for structural grids. When the component is greater than 1, the grid reference must always be a structural grid (GRID).
  5. This card is represented as a constraint load in HyperMesh.