BFV, Volu, Lab, VAL1, VAL2, VAL3, PHASE
Defines a body force load on a volume.
VoluVolume to which body load applies. If ALL, apply
to all selected volumes [VSEL]. A component name
may also be substituted for Volu.
LabValid body load label. Load labels are listed under "Body Loads" in the input table for each element type in the Element Reference.
| Discipline | Body Load Label | Label Description |
|---|---|---|
| Structural | TEMP | temperature |
| FLUE | fluence | |
| Thermal | HGEN | heat generation rate |
| Magnetic | TEMP | temperature |
| JS | current densities | |
| Electric | TEMP | temperature |
| CHRGD | charge density | |
| Acoustic | JS | mass source or mass source rate |
| TEMP | temperature |
VAL1, VAL2, VAL3Value associated with the Lab item or a table name for specifying
tabular boundary conditions. Use only VAL1 for TEMP, FLUE, HGEN,
and CHRGD. Use VAL1, VAL2, and
VAL3 for the X, Y, and Z components of JS. For
Lab = JS in magnetics, use VAL1,
VAL2, and VAL3 for the X, Y, and Z
components. For acoustics, if Lab = JS, use
VAL1 for mass source in a harmonic analysis or mass source rate in
a transient analysis, and ignoreVAL2 and
VAL3. When specifying a table name, you must enclose the table
name in percent signs (%), e.g.,
BFV,Volu,Lab,%tabname%. Use the *DIM command to define a
table.
PHASEPhase angle in degrees associated with the JS label.
Defines a body force load (such as temperature in a structural analysis, heat generation rate in a thermal analysis, etc.) on a volume. Body loads may be transferred from volumes to volume elements (or to nodes if volume elements do not exist) with the BFTRAN or SBCTRAN commands. Body loads default to the value specified on the BFUNIF command, if it was previously specified.
You can specify a table name only when using temperature (TEMP) and heat generation rate (HGEN) body load labels.
Body loads specified by the BFV command can conflict with other specified body loads. See Resolution of Conflicting Body Load Specifications in the Basic Analysis Guide for details.
Graphical picking is available only via the listed menu paths.
This command is also valid in PREP7.