Mechanical APDL Basic Analysis Guide - Ansys

To view correct mid-surface results for shells (SHELL,MID), use KEYOPT (8) = 2 (for SHELL181, SHELL208,
SHELL209, SHELL281, or ELBOW290). These KEYOPT settings write the mid-surface results directly to the
results file, and allow the mid-surface results to be directly operated on during squaring operations, instead
of averaging the squared TOP and BOTTOM results.
You should therefore use only untransformed (RSYS,SOLU), unaveraged (PRESOL, PLESOL) results
whenever you perform a squaring operation, such as in a spectrum (SPRS,PSD) analysis.
7.4.3.1. Saving a Combined Load Case
By default, the results of a load case combination are stored in memory, overwriting the results portion of
the database. To save these results - for later review or for subsequent combinations with other load cases
- use one of the following methods:
• writing the data to a load case file
• appending the data to the results file.
Use the LCWRITE command (Main Menu> General Postproc> Load Case> Write Load Case) to write the
load case currently in memory to a load case file. The file is named Jobname.Lnn, where nn is the load
case number you assign. Using nn in subsequent load case combinations will refer to the load case stored
on the load case file.
The following example illustrates the use of the LCWRITE command:
LCDEF,1,5 ! Load case 1 points to load step 5
LCDEF,2,7 ! Load case 2 points to load step 7
LCDEF,3,10 ! Load case 3 points to load step 10
LCASE,1 ! Reads load case 1 into memory
LCOPER,MAX,2 ! Stores max. of database and load case 2 in memory
LCWRITE,12 ! Writes current load case to Jobname.L12
LCASE,3 ! Reads load case 3 into memory
LCOPER,ADD,12 ! Adds database to load case on Jobname.L12
LCDEF,STAT ! Results in the following output:
Sample Output from LCDEF,STAT
LOAD CASE= 1 SELECT= 1 ABS KEY= 0 FACTOR= 1.0000
LOAD STEP= 5 SUBSTEP= 2 CUM. ITER.= 4 TIME/FREQ= .25000
FILE=beam.rst
Simply supported beam
LOAD CASE= 2 SELECT= 1 ABS KEY= 0 FACTOR= 1.0000
LOAD STEP= 7 SUBSTEP= 3 CUM. ITER.= 10 TIME/FREQ= .75000
FILE=beam.rst
Simply supported beam
LOAD CASE= 3 SELECT= 1 ABS KEY= 0 FACTOR= 1.0000
LOAD STEP= 10 SUBSTEP= 2 CUM. ITER.= 12 TIME/FREQ= 1.0000
FILE=beam.rst
Simply supported beam
LOAD CASE= 12 SELECT= 1 ABS KEY= 0 FACTOR= 1.0000
LOAD STEP= 0 SUBSTEP= 0 CUM. ITER.= 0 TIME/FREQ= .00000E+00
FILE=beam.l12
Simply supported beam
Using the RAPPND command (Main Menu> General Postproc> Write Results), you can append the load
case currently in memory to the results file. The data are stored on the results file just like any other results
data set except that:
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Sample Output from LCDEF,STAT
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