Command(s):SBCTRAN
GUI: Main Menu> Preprocessor> Loads> Define Loads> Operate> Transfer to FE> All Solid Lds
Main Menu> Solution> Define Loads> Operate> Transfer to FE> All Solid Lds
2.5.5.1. Resetting Constraints
By default, if you repeat a DOF constraint on the same degree of freedom, the new specification replaces
the previous one. You can change this default to add (for accumulation) or ignore with the DCUM
command (Main Menu> Preprocessor> Loads> Define Loads> Settings> Replace vs. Add> Con-
straints). For example:
NSEL,...! Selects a set of nodes
D,ALL,UX,40! Sets UX = 40 at all selected nodes
D,ALL,UX,50! Changes UX value to 50 (replacement)
DCUM,ADD! Subsequent D's to be added
D,ALL,UX,25! UX = 50+25 = 75 at all selected nodes
DCUM,IGNORE! Subsequent D's to be ignored
D,ALL,UX,1325! These UX values are ignored!
DCUM! Resets DCUM to default (replacement)See the Command Reference for discussions of the NSEL,D, and DCUM commands.
Any DOF constraints you set with DCUM stay set until another DCUM is issued. T o reset the default
setting (replacement), simply issue DCUM without any arguments.
2.5.5.2. Scaling Constraint Values
You can scale existing DOF constraint values as follows:
Command(s):DSCALE
GUI: Main Menu> Preprocessor> Loads> Define Loads> Operate> Scale FE Loads> Constraints
Main Menu> Solution> Define Loads> Operate> Scale FE Loads> Constraints
Both the DSCALE and DCUM commands work on all selected nodes and also on all selected DOF labels.
By default, DOF labels that are active are those associated with the element types in the model:
Command(s):DOFSEL
GUI: Main Menu> Preprocessor> Loads> Define Loads> Operate> Scale FE Loads> Constraints
(or Forces)
Main Menu> Preprocessor> Loads> Define Loads> Settings> Replace vs. Add> Constraints (or
Forces)
Main Menu> Solution> Define Loads> Operate> Scale FE Loads> Constraints (or Forces)
Main Menu> Solution> Define Loads> Settings> Replace vs. Add> Constraints (or Forces)
For example, if you want to scale only UX values and not any other DOF label, you can use the following
commands:
DOFSEL,S,UX! Selects UX label
DSCALE,0.5! Scales UX at all selected nodes by 0.5
DOFSEL,ALL! Reactivates all DOF labelsDSCALE and DCUM also affect velocity and acceleration loads applied in a structural analysis.
When scaling temperature constraints ( TEMP) in a thermal analysis, you can use the TBASE field on the
DSCALE command to scale the temperature offset from a base temperature (that is, to scale
|TEMP-TBASE|) rather than the actual temperature values. The following figure illustrat es this.
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