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Restart Facilities
Note that for nonlinear, dynamic, transient or viscous analyses the frequency of restart
file generation is controlled via the OUTPUT data sections of the appropriate
CONTROL data chapter.
Writing to a Restart File
The data section RESTART WRITE is used to control writing of the LUSAS database
to disk for subsequent processing.
RESTART WRITE
ndump
[BRIEF]
[ndump]
The number of the restart dump to be written.
Notes
1. Restart files are written to a file of the same name as the data file but with an
extension of .rst.
2. May be placed after any LOAD CASE data chapter for nonlinear problems.
3. The RESTART WRITE BRIEF command will dump sufficient information to
enable a problem to be restarted for LOAD COMBINATIONS. This option cannot
be used for restarting any other problem.
4. If no dump number is specified the dump number will be incremented by one from
the previous highest value.
5. If a dump number is specified that already exists, a warning message will be
printed and the dump will be overwritten.
6. In a nonlinear problem a dump will only be written if the solution converged.
7. When carrying out a nonlinear, dynamic, transient or a viscous analysis the restart
write file should be requested by setting the incrst parameter within the
OUTPUT data section in the appropriate data chapter.
8. If a nonlinear, dynamic, transient or a viscous analysis terminates and restart
dumps have been requested a restart dump will always be created for the last
increment.
9. Selecting Option 251 will generate a restart file from a data check phase. To
complete the analysis after a successful data check, initiate the restart file and
LUSAS will recommence the analysis at the equation solution phase. This
particular restart facility is only valid for a linear static problem and is not
available for other types of analyses.
Reading from a Restart File
The data section RESTART READ is used to control reading of the written LUSAS
database from disk for subsequent processing.
RESTART READ
ndump
[ndump]
[fname]
The number of the RESTART WRITE dump to be recovered
(default = last saved dump).
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