Single Point Constraint
Description: Defines sets of single-point constraints and enforced displacements.
Format:
Example:
| Field | Definition | Type | Default |
|---|---|---|---|
| SID | Identification number of single point constraint set. | Integer ≥ 0 | Required |
| Gi | Grid point identification number. | Integer > 0 | Required |
| Ci | Component number of global coordinate. (Up to six unique digits may be placed in the field with no embedded blanks.) | 1 ≤ Integers ≤ 6 | Required |
| Di | Enforced displacement for all coordinates designated by G and C. | Real or blank | 0.0 |
Remarks:
- Single-point constraint sets must be selected in the Case Control Section (SPC = SID).
- From one to twelve degrees of freedom may be defined on a single entry.
- Continuations are not allowed.
- The SPCD entry is the preferred method for applying enforced displacements, rather than the "D" field described above when multiple subcases with different enforced displacement conditions are applied.
- Single-point constraint sets with SID set to zero will be applied to all subcases.