The Enforced displacement value spcd cold steel entry defines an enforced displacement value for the transient analysis.

The Enforced displacement value spcd cold steel entry can be referenced with a LOAD entry. If an SPCD entry is referenced with a LOAD entry, the specified displacement or rotation degrees of freedom will not vary with time. In general, an SPCD entry will be referenced with a TLOAD1 entry, which will use the information on the SPCD entry to create a time-varying kinematic boundary condition.

In general, Enforced displacement value spcd cold steel is highly recommended that you not introduce an initial non-zero displacement at time zero in the analysis.

Format

1	2	3	4	9	10
SPCD	SID	G1	C1	unused	unused

Instantaneous non-zero boundary conditions applied in an explicit dynamics analysis introduce very strong shocks into the model and, if the magnitude of the displacement is large enough, can turn elements inside-out in the first time increment. Care should be taken to specify an appropriate amplitude via the TABLED1, TABLED2 or TABLEH options.

Field	Definition	Type	Default
SID	Identification number of single load 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
D	Enforced displacement for all coordinates designated by G and C.	Real or blank	0.0