FK
FK, KPOI, Lab, VALUE, VALUE2
Defines force loads at keypoints.
KPOIKeypoint 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 forKPOI.LabValid force labels are:
Structural labels: FX, FY, or FZ (forces); MX, MY, or MZ (moments). Thermal labels: HEAT, HBOT, HE2, HE3, . . ., HTOP (heat flow). Fluid label: FLOW (fluid flow). Electric labels: AMPS (current flow), CHRG (electric charge). Magnetic labels: FLUX (magnetic flux); CSGZ (magnetic current segment). Diffusion label: RATE (diffusion flow rate). VALUEForce value or table name reference for specifying tabular boundary conditions. To specify a table, enclose the table name in percent signs (%), for example, FK,
KPOI, HEAT,%tabname%). Use the *DIM command to define a table.VALUE2Second force value (if any). If the analysis type and the force allow a complex input,
VALUE(above) is the real component andVALUE2is the imaginary component.
Notes
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.