fk'', lab='', value='', value2='', **kwargs)

Defines force loads at keypoints.

APDL Command: FK


Keypoint at which force is to be specified. If ALL, apply to all selected keypoints [KSEL]. If KPOI = P, graphical picking is enabled and all remaining command fields are ignored (valid only in the GUI). A component name may also be substituted for KPOI.


Valid force label. Structural labels: FX, FY, or FZ (forces); MX, MY, or MZ (moments). Thermal labels: HEAT, HBOT, HE2, HE3, …, HTOP (heat flow). Fluid labels: FLOW (fluid flow). Electric labels: AMPS (current flow), CHRG (electric charge). Magnetic labels: FLUX (magnetic flux); CSGX, CSGY, or CSGZ (magnetic current segments). Diffusion labels: RATE (diffusion flow rate).


Force value or table name reference for specifying tabular boundary conditions. To specify a table, enclose the table name in percent signs (%), e.g., FK, KPOI, HEAT,%tabname%). Use the *DIM command to define a table.


Second force value (if any). If the analysis type and the force allow a complex input, VALUE (above) is the real component and VALUE2 is the imaginary component.


Forces may be transferred from keypoints to nodes with the FTRAN or SBCTRAN commands. See the F command for a description of force loads.

Tabular boundary conditions (VALUE = %tabname%) are available only for the following labels: Fluid (FLOW), Electric (AMPS), Structural force (FX, FY, FZ, MX, MY, MZ), and Thermal (HEAT, HBOT, HE2, HE3, …, HTOP).

This command is also valid in PREP7.