Mechanical APDL Basic Analysis Guide - Ansys

Below are examples of some of the GUI paths to use for applying force loads:
GUI:
Main Menu> Preprocessor> Loads> Define Loads> Apply> load type> On Nodes
Utility Menu> List> Loads> Forces> On All Keypoints (or On Picked KPs)
Main Menu> Solution> Define Loads> Apply> load type> On Lines
See the Command Reference for descriptions of the commands listed in Table 2.4: Commands for Applying
Force Loads (p. 32).
2.5.6.1. Repeating a Force
By default, if you repeat a force at the same degree of freedom, the new specification replaces the previous
one. You can change this default to add (for accumulation) or ignore by using one of the following:
Command(s): FCUM
GUI: Main Menu> Preprocessor> Loads> Define Loads> Settings> Replace vs Add> Forces
Main Menu> Solution> Define Loads> Settings> Replace vs. Add> Forces
For example:
F,447,FY,3000 ! Applies FY = 3000 at node 447
F,447,FY,2500 ! Changes FY value to 2500 (replacement)
FCUM,ADD ! Subsequent F's to be added
F,447,FY,-1000 ! FY = 2500-1000 = 1500 at node 447
FCUM,IGNORE ! Subsequent F's to be ignored
F,25,FZ,350 ! This force is ignored!
FCUM ! Resets FCUM to default (replacement)
See the Command Reference for a discussion of the F and FCUM commands.
Any force set via FCUM stays set until another FCUM is issued. To reset the default setting (replacement),
simply issue FCUM without any arguments.
2.5.6.2. Scaling Force Values
The FSCALE command allows you to scale existing force values:
Command(s): FSCALE
GUI: Main Menu> Preprocessor> Loads> Define Loads> Operate> Scale FE Loads> Forces
Main Menu> Solution> Define Loads> Operate> Scale FE Loads> Forces
FSCALE and FCUM work on all selected nodes and also on all selected force labels. By default, force labels
that are active are those associated with the element types in the model. You can select a subset of these
with the DOFSEL command. For example, to scale only FX values and not any other label, you can use the
following commands:
DOFSEL,S,FX ! Selects FX label
FSCALE,0.5 ! Scales FX at all selected nodes by 0.5
DOFSEL,ALL ! Reactivates all DOF labels
2.5.6.3. Transferring Forces
To transfer forces that have been applied to the solid model to the corresponding finite element model, use
one of the following:
Command(s): FTRAN
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2.5.6. Forces (Concentrated Loads)
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