Mechanical APDL Basic Analysis Guide

2.5.15.3. Operating on Table Parameters

For convenience, you can multiply table parameters by constants, add one table to another, and add
a constant increment for offset. To do so, use the *TOPER command (Utility Menu> Parameters> Array
Operations> Table Operations). The two tables must have the same dimensions and must have the
same variable names for the rows and columns. The tables must also have identical index values for
rows, columns, etc.

2.5.15.4. Verifying Boundary Conditions

If you use table arra y parameters to define boundary conditions, you may want to verify that the correct
table and the correct values from the table were applied. You can do so in several ways:

• You can look in the Output window. If you apply tabular boundary conditions on finite element or
  solid model entities, the name of the table, not the numerical value, is echoed in the Output window.


• You can list boundary conditions. If you list the boundary conditions during /PREP7, table names are
  listed. Longer table names may be truncated. However, if you list boundary conditions during any of
  the solution or postprocessing phases at a particular entity or time point, the actual numerical value
  at the location or time is listed.


• You can look at the graphical display. Where tabular boundary conditions were applied, the table
  name and any appropriate symbols (face outlines, arrows, etc.) can be displayed using the standard
  graphic display capabilities (/PBC,/PSF, etc.), provided that table numbering is on (/PNUM,TABNAM,ON).


• You can look at the numerically-substituted table of values (/PNUM,SVAL) in POST1.


• You can retrieve a value of a table parameter at any given combination of variables using the *STATUS
  command (Utility Menu> List> Other> Parameters).

2.5.15.5. Example Analysis Using 1-D Table Array

An example of how to run a steady-state thermal analysis using tabular boundary conditions is described
in Performing a Thermal Analysis Using Tabular Boundary Conditions.

2.5.15.6. Example Analysis Using 5-D Table Array

This example shows how to run an analysis using a 5-D table. Note that 4- and 5-D tables cannot be
defined interactively; you must use the command method.

This problem consists of a thermal-stress analysis with a pressure that varies as a function of
(x,y,z,time,temp). The table and table values are first defined. The table is applied as a pressure boundary
condition to the faces of a rectangular beam. Time and temperature are prescribed for two load steps
and solved.

/batch,list

/title, Illustrate use of 5D table for SF command (pressure) loading

!!!!

!!!!

!!!! create 5D table for applied pressure

X1=2 !!!! X dimensionality

Y1=2 !!!! Y dimensionality

Z1=10 !!!! Z dimensionality

D4=5 !!!! time dimensionality

D5=5 !!!! temperature dimensionality

len=10 !!!! cantilever beam length

wid=1 !!!! cantilever beam width

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