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RESTART
If this parameter is omitted, the restart will begin at the end of the step specified on the STEP
parameter.
ITERATION
If the n ew analysis is restarted from a previous direct cyclic analysis, set this parameter equal to the
iteration number within the specified step of the direct cyclic analysis after which the analysis will
resume. Since the new analysis can be restarted only from the end of a loading cycle in the previous
direct cy clic analysis, the INC param eter is irrelevant and is ignored if the ITERATION parameter
is specified.
If this parameter is omitted, the restart will begin at the end of the last iteration for the specified
step.
STEP
Set this parameter equal to the step number at which the restart will be made.
If this parameter is omitted, the analysis will restart at the last available step found.
Optional parameters if the WRITE parameter is used:
FREQUENCY
This parameter specifies the increments at which restart information will be written. For example,
FREQUENCY=2 will write restart information at increments 2, 4, 6, etc. For a direct cyclic analysis
this parameter specifies the iteration numbers at which restart information will be written; restart
information will be written only at the end of an iteration. When restart is requested in an analysis,
restart information is always written at the end of a step. Set FREQUENCY=0 to discontinue the
writing of restart data.
The FREQUENCY and NUMBER INTERVAL parameters are mutually exclusive. The
default is FREQUENCY=1.
NUMBER INTERVAL
Set this param eter equal to the num ber of intervals during the step at which the
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RESTART data
are to be written. The value of this parameter must be a positive integer.
The FREQUENCY and NUMBER INTERVAL parameters are mutually exclusive. The
default is FREQUENCY=1.
TIME MARKS
Set TIME MARKS=YES (default) to write results at the exact times dictated by the NUMBER
INTERVAL parameter.
Set TIME MARKS=NO to write the restart at the increment ending immediately after the time
dictated by the NUMBER INTERVAL parameter.
OVERLAY
This parameter specifies that only one increm ent should be retained per step, thus minimizing the
storage space needed.
17.15–2
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