Mechanical APDL Basic Analysis Guide - Ansys

Chapter 2: Loading
varies with time. In this scenario, you need two tables: one relating RPM to TIME, and another table relating
HF to RPM and TEMP.
*DIM,SYCNV,TABLE,3,3,,RPM,TEMP
SYCNV(1,0)=0.0,20.0,40.0
SYCNV(0,1)=0.0,10.0,20.0,40.0
SYCNV(0,2)=0.5,15.0,30.0,60.0
SYCNV(0,3)=1.0,20.0,40.0,80.0
*DIM,RPM,TABLE,4,1,1,TIME
RPM(1,0)=0.0,10.0,40.0,60.0
RPM(1,1)=0.0,5.0,20.0,30.0
SF,ALL,CONV,%SYCNV%
When defining the tables, the independent variables must be in ascending order in the table indices (as in
any table array).
2.5.14.3. 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.
2.5.14.4. Verifying Boundary Conditions
If you use table array 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 ANSYS
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).
2.5.14.5. 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.
2.5.14.6. 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.
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