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EXAMPLE: RESTARTING THE PIPE VIBRATION ANALYSIS
11.5.3
Running the analysis
When running a simulation that will need to read data from a restart file, you must specify the root name
of the restart file, without the .res extension, with the oldjob parameter on the Abaqus command
line. Thus, use the following command to run this restart analysis:
abaqus job=pipe-2 oldjob=pipe
11.5.4
Status file
Again, check the status file as the job is running. When the analysis completes, the contents of the status
file will look like
SUMMARY OF JOB INFORMATION:
STEP INC ATT SEVERE EQUIL TOTAL
DISCON ITERS ITERS
ITERS
3
1
1
0
1
1
3
2
1
0
1
1
3
3
1
0
1
1
3
4
1
0
1
1
3
5
1
0
1
1
3
6
1
0
1
1
4
1
1
0
6
0
TOTAL
TIME/
FREQ
1.10
1.20
1.35
1.58
1.91
2.00
2.00
STEP
TIME/LPF
0.100
0.200
0.350
0.575
0.913
1.00
1.00e-36
INC OF
TIME/LPF
DOF
IF
MONITOR RIKS
0.1000
0.1000
0.1500
0.2250
0.3375
0.08750
1.000e-36
This analysis starts at Step 3 since Steps 1 and 2 were completed in the previous analysis. There
are now two output database (.odb) files associated with this simulation. Data for Steps 1 and 2 are
in the file pipe.odb; data for Steps 3 and 4 are in the file pipe-2.odb. When plotting results in
Abaqus/Viewer, you need to remember which results are stored in each file, and you need to ensure that
Abaqus/Viewer is using the correct output database file.
11.5.5
Postprocessing the restart analysis results
Start Abaqus/Viewer and specify that the output database file from the restart analysis should be used by
giving the following command:
abaqus viewer odb=pipe-2
Plotting the eigenmodes of the pipe
Plot the same six eigenmode shapes of the pipe section for this simulation as were plotted in the
previous analysis. The eigenmode shapes can be plotted using the procedures described for the
original analysis. These eigenmodes and their natural frequencies are shown in Figure 11–12; again,
the corresponding mode shapes lie in planes orthogonal to each other.
11–21
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