ansys.mapdl.core.Mapdl.bf#

Mapdl.bf(node='', lab='', val1='', val2='', val3='', val4='', val5='', val6='', meshflag='', **kwargs)#

Defines a nodal body-force load.

Mechanical APDL Command: BF

Parameters:

nodestr

Node to which body load applies. If Node = ALL, apply to all selected nodes ( nsel ). A component name may also be substituted for Node.

labstr

Valid body load label. Load labels are listed under Body Loads in the input table for each element type in the Element Reference.

This command contains some tables and extra information which can be inspected in the original documentation pointed above.

val1str

Value associated with the Lab item or table name reference for tabular boundary conditions. Use only VAL1 for TEMP, FLUE, HGEN, DGEN, MVDI, CHRGD, PORT, and SPRE.

Tabular input is supported for certain labels (see Notes for details). To specify a table, enclose the table name in percent signs (%) (e.g., bf, Node,TEMP,``tabname``). Use the dim command to define a table.

If Lab = MASS for acoustics:

VAL1 - Mass source with units of kg/(m ³ *s) in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or mass source rate with units of kg/(m ³ *s ² ) in a transient analysis solved with the pressure formulation; or power source with units of watts in an energy diffusion solution for room acoustics
VAL2 - Phase angle in degrees
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for acoustics (velocity components in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or acceleration components in a transient analysis solved with the pressure formulation):

VAL1 - X component
VAL2 - Y component
VAL3 - Z component
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = VELO for electromagnetics (velocity and angular velocity components in the global Cartesian coordinate system):

VAL1 - Velocity component in the X direction
VAL2 - Velocity component in the Y direction
VAL3 - Velocity component in the Z direction
VAL4 - Angular velocity about the X axis (rad/sec)
VAL5 - Angular velocity about the Y axis (rad/sec)
VAL6 - Angular velocity about the Z axis (rad/sec)

If Lab = VELO for thermal (velocity components in the global Cartesian coordinate system):

VAL1 - Mass transport velocity component in X direction
VAL2 - Mass transport velocity component in Y direction
VAL3 - Mass transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for diffusion (transport velocity):

VAL1 - Transport velocity component in X direction
VAL2 - Transport velocity component in Y direction
VAL3 - Transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = IMPD:

VAL1 - Resistance in N⋅s/m ³
VAL2 - Reactance in N⋅s/m ³
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = FPBC:

VAL1 - Phase shift (product of phase constant and period in unit radian); or Floquet boundary flag (set VAL1 = YES) for a modal analysis that solves the eigenvalues with a specified frequency ( FREQMOD on the modopt command)
VAL2 - Attenuation (product of attenuation constant and period); not used if VAL1 = YES
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VMEN:

VAL1 - Mean flow velocity component in the X direction
VAL2 - Mean flow velocity component in the Y direction
VAL3 - Mean flow velocity component in the Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = UFOR:

VAL1 - Real part of complex force potential
VAL2 - Imaginary part of complex force potential
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = SFOR:

VAL1 - X component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL2 - Y component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL3 - Z component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = HFLW:

VAL1 - Real part of volumetric heat source for viscous-thermal acoustics
VAL2 - Imaginary part of volumetric heat source for viscous-thermal acoustics
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

val2str

Value associated with the Lab item or table name reference for tabular boundary conditions. Use only VAL1 for TEMP, FLUE, HGEN, DGEN, MVDI, CHRGD, PORT, and SPRE.

Tabular input is supported for certain labels (see Notes for details). To specify a table, enclose the table name in percent signs (%) (e.g., bf, Node,TEMP,``tabname``). Use the dim command to define a table.

If Lab = MASS for acoustics:

VAL1 - Mass source with units of kg/(m ³ *s) in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or mass source rate with units of kg/(m ³ *s ² ) in a transient analysis solved with the pressure formulation; or power source with units of watts in an energy diffusion solution for room acoustics
VAL2 - Phase angle in degrees
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for acoustics (velocity components in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or acceleration components in a transient analysis solved with the pressure formulation):

VAL1 - X component
VAL2 - Y component
VAL3 - Z component
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = VELO for electromagnetics (velocity and angular velocity components in the global Cartesian coordinate system):

VAL1 - Velocity component in the X direction
VAL2 - Velocity component in the Y direction
VAL3 - Velocity component in the Z direction
VAL4 - Angular velocity about the X axis (rad/sec)
VAL5 - Angular velocity about the Y axis (rad/sec)
VAL6 - Angular velocity about the Z axis (rad/sec)

If Lab = VELO for thermal (velocity components in the global Cartesian coordinate system):

VAL1 - Mass transport velocity component in X direction
VAL2 - Mass transport velocity component in Y direction
VAL3 - Mass transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for diffusion (transport velocity):

VAL1 - Transport velocity component in X direction
VAL2 - Transport velocity component in Y direction
VAL3 - Transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = IMPD:

VAL1 - Resistance in N⋅s/m ³
VAL2 - Reactance in N⋅s/m ³
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = FPBC:

VAL1 - Phase shift (product of phase constant and period in unit radian); or Floquet boundary flag (set VAL1 = YES) for a modal analysis that solves the eigenvalues with a specified frequency ( FREQMOD on the modopt command)
VAL2 - Attenuation (product of attenuation constant and period); not used if VAL1 = YES
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VMEN:

VAL1 - Mean flow velocity component in the X direction
VAL2 - Mean flow velocity component in the Y direction
VAL3 - Mean flow velocity component in the Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = UFOR:

VAL1 - Real part of complex force potential
VAL2 - Imaginary part of complex force potential
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = SFOR:

VAL1 - X component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL2 - Y component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL3 - Z component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = HFLW:

VAL1 - Real part of volumetric heat source for viscous-thermal acoustics
VAL2 - Imaginary part of volumetric heat source for viscous-thermal acoustics
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

val3str

Value associated with the Lab item or table name reference for tabular boundary conditions. Use only VAL1 for TEMP, FLUE, HGEN, DGEN, MVDI, CHRGD, PORT, and SPRE.

Tabular input is supported for certain labels (see Notes for details). To specify a table, enclose the table name in percent signs (%) (e.g., bf, Node,TEMP,``tabname``). Use the dim command to define a table.

If Lab = MASS for acoustics:

VAL1 - Mass source with units of kg/(m ³ *s) in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or mass source rate with units of kg/(m ³ *s ² ) in a transient analysis solved with the pressure formulation; or power source with units of watts in an energy diffusion solution for room acoustics
VAL2 - Phase angle in degrees
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for acoustics (velocity components in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or acceleration components in a transient analysis solved with the pressure formulation):

VAL1 - X component
VAL2 - Y component
VAL3 - Z component
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = VELO for electromagnetics (velocity and angular velocity components in the global Cartesian coordinate system):

VAL1 - Velocity component in the X direction
VAL2 - Velocity component in the Y direction
VAL3 - Velocity component in the Z direction
VAL4 - Angular velocity about the X axis (rad/sec)
VAL5 - Angular velocity about the Y axis (rad/sec)
VAL6 - Angular velocity about the Z axis (rad/sec)

If Lab = VELO for thermal (velocity components in the global Cartesian coordinate system):

VAL1 - Mass transport velocity component in X direction
VAL2 - Mass transport velocity component in Y direction
VAL3 - Mass transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for diffusion (transport velocity):

VAL1 - Transport velocity component in X direction
VAL2 - Transport velocity component in Y direction
VAL3 - Transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = IMPD:

VAL1 - Resistance in N⋅s/m ³
VAL2 - Reactance in N⋅s/m ³
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = FPBC:

VAL1 - Phase shift (product of phase constant and period in unit radian); or Floquet boundary flag (set VAL1 = YES) for a modal analysis that solves the eigenvalues with a specified frequency ( FREQMOD on the modopt command)
VAL2 - Attenuation (product of attenuation constant and period); not used if VAL1 = YES
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VMEN:

VAL1 - Mean flow velocity component in the X direction
VAL2 - Mean flow velocity component in the Y direction
VAL3 - Mean flow velocity component in the Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = UFOR:

VAL1 - Real part of complex force potential
VAL2 - Imaginary part of complex force potential
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = SFOR:

VAL1 - X component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL2 - Y component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL3 - Z component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = HFLW:

VAL1 - Real part of volumetric heat source for viscous-thermal acoustics
VAL2 - Imaginary part of volumetric heat source for viscous-thermal acoustics
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

val4str

Value associated with the Lab item or table name reference for tabular boundary conditions. Use only VAL1 for TEMP, FLUE, HGEN, DGEN, MVDI, CHRGD, PORT, and SPRE.

Tabular input is supported for certain labels (see Notes for details). To specify a table, enclose the table name in percent signs (%) (e.g., bf, Node,TEMP,``tabname``). Use the dim command to define a table.

If Lab = MASS for acoustics:

VAL1 - Mass source with units of kg/(m ³ *s) in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or mass source rate with units of kg/(m ³ *s ² ) in a transient analysis solved with the pressure formulation; or power source with units of watts in an energy diffusion solution for room acoustics
VAL2 - Phase angle in degrees
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for acoustics (velocity components in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or acceleration components in a transient analysis solved with the pressure formulation):

VAL1 - X component
VAL2 - Y component
VAL3 - Z component
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = VELO for electromagnetics (velocity and angular velocity components in the global Cartesian coordinate system):

VAL1 - Velocity component in the X direction
VAL2 - Velocity component in the Y direction
VAL3 - Velocity component in the Z direction
VAL4 - Angular velocity about the X axis (rad/sec)
VAL5 - Angular velocity about the Y axis (rad/sec)
VAL6 - Angular velocity about the Z axis (rad/sec)

If Lab = VELO for thermal (velocity components in the global Cartesian coordinate system):

VAL1 - Mass transport velocity component in X direction
VAL2 - Mass transport velocity component in Y direction
VAL3 - Mass transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for diffusion (transport velocity):

VAL1 - Transport velocity component in X direction
VAL2 - Transport velocity component in Y direction
VAL3 - Transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = IMPD:

VAL1 - Resistance in N⋅s/m ³
VAL2 - Reactance in N⋅s/m ³
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = FPBC:

VAL1 - Phase shift (product of phase constant and period in unit radian); or Floquet boundary flag (set VAL1 = YES) for a modal analysis that solves the eigenvalues with a specified frequency ( FREQMOD on the modopt command)
VAL2 - Attenuation (product of attenuation constant and period); not used if VAL1 = YES
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VMEN:

VAL1 - Mean flow velocity component in the X direction
VAL2 - Mean flow velocity component in the Y direction
VAL3 - Mean flow velocity component in the Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = UFOR:

VAL1 - Real part of complex force potential
VAL2 - Imaginary part of complex force potential
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = SFOR:

VAL1 - X component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL2 - Y component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL3 - Z component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = HFLW:

VAL1 - Real part of volumetric heat source for viscous-thermal acoustics
VAL2 - Imaginary part of volumetric heat source for viscous-thermal acoustics
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

val5str

Value associated with the Lab item or table name reference for tabular boundary conditions. Use only VAL1 for TEMP, FLUE, HGEN, DGEN, MVDI, CHRGD, PORT, and SPRE.

Tabular input is supported for certain labels (see Notes for details). To specify a table, enclose the table name in percent signs (%) (e.g., bf, Node,TEMP,``tabname``). Use the dim command to define a table.

If Lab = MASS for acoustics:

VAL1 - Mass source with units of kg/(m ³ *s) in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or mass source rate with units of kg/(m ³ *s ² ) in a transient analysis solved with the pressure formulation; or power source with units of watts in an energy diffusion solution for room acoustics
VAL2 - Phase angle in degrees
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for acoustics (velocity components in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or acceleration components in a transient analysis solved with the pressure formulation):

VAL1 - X component
VAL2 - Y component
VAL3 - Z component
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = VELO for electromagnetics (velocity and angular velocity components in the global Cartesian coordinate system):

VAL1 - Velocity component in the X direction
VAL2 - Velocity component in the Y direction
VAL3 - Velocity component in the Z direction
VAL4 - Angular velocity about the X axis (rad/sec)
VAL5 - Angular velocity about the Y axis (rad/sec)
VAL6 - Angular velocity about the Z axis (rad/sec)

If Lab = VELO for thermal (velocity components in the global Cartesian coordinate system):

VAL1 - Mass transport velocity component in X direction
VAL2 - Mass transport velocity component in Y direction
VAL3 - Mass transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for diffusion (transport velocity):

VAL1 - Transport velocity component in X direction
VAL2 - Transport velocity component in Y direction
VAL3 - Transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = IMPD:

VAL1 - Resistance in N⋅s/m ³
VAL2 - Reactance in N⋅s/m ³
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = FPBC:

VAL1 - Phase shift (product of phase constant and period in unit radian); or Floquet boundary flag (set VAL1 = YES) for a modal analysis that solves the eigenvalues with a specified frequency ( FREQMOD on the modopt command)
VAL2 - Attenuation (product of attenuation constant and period); not used if VAL1 = YES
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VMEN:

VAL1 - Mean flow velocity component in the X direction
VAL2 - Mean flow velocity component in the Y direction
VAL3 - Mean flow velocity component in the Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = UFOR:

VAL1 - Real part of complex force potential
VAL2 - Imaginary part of complex force potential
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = SFOR:

VAL1 - X component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL2 - Y component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL3 - Z component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = HFLW:

VAL1 - Real part of volumetric heat source for viscous-thermal acoustics
VAL2 - Imaginary part of volumetric heat source for viscous-thermal acoustics
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

val6str

Value associated with the Lab item or table name reference for tabular boundary conditions. Use only VAL1 for TEMP, FLUE, HGEN, DGEN, MVDI, CHRGD, PORT, and SPRE.

Tabular input is supported for certain labels (see Notes for details). To specify a table, enclose the table name in percent signs (%) (e.g., bf, Node,TEMP,``tabname``). Use the dim command to define a table.

If Lab = MASS for acoustics:

VAL1 - Mass source with units of kg/(m ³ *s) in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or mass source rate with units of kg/(m ³ *s ² ) in a transient analysis solved with the pressure formulation; or power source with units of watts in an energy diffusion solution for room acoustics
VAL2 - Phase angle in degrees
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for acoustics (velocity components in a harmonic analysis or in a transient analysis solved with the velocity potential formulation; or acceleration components in a transient analysis solved with the pressure formulation):

VAL1 - X component
VAL2 - Y component
VAL3 - Z component
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = VELO for electromagnetics (velocity and angular velocity components in the global Cartesian coordinate system):

VAL1 - Velocity component in the X direction
VAL2 - Velocity component in the Y direction
VAL3 - Velocity component in the Z direction
VAL4 - Angular velocity about the X axis (rad/sec)
VAL5 - Angular velocity about the Y axis (rad/sec)
VAL6 - Angular velocity about the Z axis (rad/sec)

If Lab = VELO for thermal (velocity components in the global Cartesian coordinate system):

VAL1 - Mass transport velocity component in X direction
VAL2 - Mass transport velocity component in Y direction
VAL3 - Mass transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VELO for diffusion (transport velocity):

VAL1 - Transport velocity component in X direction
VAL2 - Transport velocity component in Y direction
VAL3 - Transport velocity component in Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = IMPD:

VAL1 - Resistance in N⋅s/m ³
VAL2 - Reactance in N⋅s/m ³
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = FPBC:

VAL1 - Phase shift (product of phase constant and period in unit radian); or Floquet boundary flag (set VAL1 = YES) for a modal analysis that solves the eigenvalues with a specified frequency ( FREQMOD on the modopt command)
VAL2 - Attenuation (product of attenuation constant and period); not used if VAL1 = YES
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = VMEN:

VAL1 - Mean flow velocity component in the X direction
VAL2 - Mean flow velocity component in the Y direction
VAL3 - Mean flow velocity component in the Z direction
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = UFOR:

VAL1 - Real part of complex force potential
VAL2 - Imaginary part of complex force potential
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

If Lab = SFOR:

VAL1 - X component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL2 - Y component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL3 - Z component of shear force for viscous-thermal acoustics or poroelastic acoustics
VAL4 - X-component phase angle in degrees
VAL5 - Y-component phase angle in degrees
VAL6 - Z-component phase angle in degrees

If Lab = HFLW:

VAL1 - Real part of volumetric heat source for viscous-thermal acoustics
VAL2 - Imaginary part of volumetric heat source for viscous-thermal acoustics
VAL3 - Not used
VAL4 - Not used
VAL5 - Not used
VAL6 - Not used

meshflagstr

Specifies how to apply nodal body-force loading on the mesh. Valid in a nonlinear adaptivity analysis when Lab = HGEN or TEMP, and Node is not a component name.

0 - Nodal body-force loading occurs on the current mesh (default).
1 - Nodal body-force loading occurs on the initial mesh for nonlinear adaptivity.

Notes

Defines a nodal body-force load (such as temperature in a structural analysis, heat generation rate in a thermal analysis, etc.). Nodal body loads default to the bfunif values, if they were previously specified.

Table names are valid for Lab value ( VALn ) inputs in these cases only:

VAL1 = tabname for:

temperatures (TEMP), diffusing substance generation rates (DGEN), and heat generation rates (HGEN).

VAL1 = tabname1 and VAL2 = tabname2 for:

mass source, mass source rate, or power source (MASS); the Floquet periodic boundary condition: (FPBC); the force potential (UFOR); and the volumetric heat source (HFLW).

VAL1 = tabname1, VAL2 = tabname2, and VAL3 = tabname3 for:

mean flow velocities (VMEN).

VAL1 = tabname1, VAL2 = tabname2, VAL3 = tabname3, VAL4 = tabname4, VAL5 = tabname5, and VAL6 = tabname6 for:

velocities or accelerations (VELO); and shear force (SFOR).

The heat generation rate loads specified with the bf command are multiplied by the weighted nodal volume of each element adjacent to that node. This yields the total heat generation at that node.

In a modal analysis, the Floquet periodic boundary condition (FPBC) is only valid for the acoustic elements FLUID30, FLUID220, and FLUID221.

In a mode-superposition harmonic or transient analysis, you must apply the load in the modal portion of the analysis. Mechanical APDL calculates a load vector and writes it to the MODE file, which you can apply via the lvscale command.

This command is also valid in PREP7.