BFINT
BFINT, Fname1, Ext1, --, Fname2, Ext2, --, KPOS, Clab, KSHS, TOLOUT, TOLHGT
Activates the body force interpolation operation.
Fname1File name and directory path (248 characters maximum, including directory) from which to read data for interpolation. If you do not specify a directory path, it will default to your working directory and you can use all 248 characters for the file name.
The file name defaults to Jobname.
Ext1Filename extension (eight-character maximum).
The extension defaults to NODE if
Fname1is blank.--Unused field.
Fname2File name and directory path (248 characters maximum, including directory) to which BF commands are written. If you do not specify a directory path, it will default to your working directory and you can use all 248 characters for the file name.
The file name defaults to Jobname.
Ext2Filename extension (eight-character maximum).
The extension defaults to BFIN if
Fname2is blank.--Unused field.
KPOSPosition on
Fname2to write block of BF commands:0
—
Beginning of file (overwrite existing file).
1
—
End of file (append to existing file).
ClabLabel (8 characters maximum, including the colon) for this block of BF commands in
Fname2. This label is appended to the colon (:). Defaults to BFn, wherenis the cumulative iteration number for the data set currently in the database.KSHSShell-to-solid submodeling key:
0
—
Solid-to-solid or shell-to-shell submodel.
1
—
Shell-to-solid submodel.
TOLOUTExtrapolation tolerance about elements, based on a fraction of the element dimension. Submodel nodes outside the element by more than
TOLOUTare not accepted as candidates for DOF extrapolation. Defaults to 0.5 (50%).TOLHGTHeight tolerance above or below shell elements, in units of length. Used only for shell-to-shell submodeling (
KSHS= 0). Submodel nodes off the element surface by more thanTOLHGTare not accepted as candidates for DOF interpolation or extrapolation. Defaults to 0.0001 times the maximum element dimension.Caution: Relaxing this tolerance to allow submodel nodes to be found may cause poor submodel results.
Notes
File Fname1 should contain a node list for which body forces are to
be interpolated (NWRITE). File Fname2 is created,
and contains interpolated body forces written as a block of nodal BF commands.
Body forces are interpolated from elements having TEMP as a valid body force or degree of
freedom, and only the label TEMP is written on the nodal BF commands.
Interpolation is performed for all nodes on file Fname1 using the
results data currently in the database. For layered elements, use the LAYER
command to select the locations of the temperatures to be used for interpolation. Default
locations are the bottom of the bottom layer and the top of the top layer.
The block of BF commands begins with an identifying colon label command and
ends with a /EOF command. The colon label command has the form
:Clab. Interpolation from multiple results sets can be performed by
looping through the results file in a user-defined macro. Additional blocks can be appended to
Fname2 by using KPOS and unique colon
labels. Issue /INPUT, with the appropriate colon label, to read the block of
commands.
If the model has coincident (or very close) nodes, BFINT must be applied to each part of the model separately to ensure that the mapping of the nodes is correct. For example, if nodes belonging to two adjacent parts linked by springs are coincident, the operation should be performed on each part of the model separately.