SPC

SPC – Single-Point Constraint

Defines sets of single-point constraints and enforced displacements.

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
SPC	SID	G	C	D	G	C	D

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
SPC	2	32	436	0.0

Field	Contents
SID	Identification number of single-point constraint set. (Integer > 0)
G	Grid or scalar point identification number. (Integer > 0)
C	Component numbers. (Integer zero or blank for scalar points, or up to six unique digits (0 < digit < 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.)
D	Value of enforced displacement for all coordinates designated by G and C. (Real)

- Included in a single point constraint (SPC or SPC1).

- Declared a dependent degree of freedom on any other RBAR, RBE1, RBE2, or RROD entry.

- Declared a dependent degree of freedom on an MPC set referenced by a subcase.

Single-point forces of constraint are recovered during stress data recovery.
Up to twelve single-point constraints may be defined on a single entry.
Continuations are not allowed.
SPCD can be used to enforce displacement as a load.
When the I/O option SPSYNTAX 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).

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