10.2 Restart a Job

If an analysis takes a long time, you may find yourself wanting to continue it after it is done or somehow it crashed. Power outage may interrupt you Job before is finished, or may be you did not anticipate needing to go so far in Time with your analysis. In any case, you may want to continue rather than restarting from the beginning. This is how you do it.

To restart a Job, the original job must have had this:

** OUTPUT REQUESTS
** uncomment next line and choose "frequency" to write restart files
*Restart, write, overlay, frequency=10

where frequency is the number of steps between successive writes to the .res file. You could put frequency=1, but that may produce a huge .res file, and Abaqus™ has a limit for the size of the file [4, §9.1.1.].

Then, this command will restart the Job

** abaqus job=NewName oldjob=OldName input=NewName ask_delete=OFF standard_parallel=solver cpus=4 user=UMAT 

You need a NewName.inp file to RESTART a JOB after STEP=1, INC=110. Here is an example.

*RESTART, READ, STEP=1, INC=110
**
** At the end of the restarted STEP, 
** you can start a new STEP, with different values if you want
** STEP: ApplyStrain_2
** 
*Step, name=ApplyStrain_2, nlgeom=NO, inc=1999999999
*Static
0.015, 10., 1e-09, 0.015
*Solution Technique, type=QUASI-NEWTON
** 
** BOUNDARY CONDITIONS
** 
** Name: ApplyDisp-RP Type: Displacement/Rotation
*Boundary
Laminate-1.Set-RP, 1, 1, 1.905
Laminate-1.Set-RP, 2, 2
Laminate-1.Set-RP, 3, 3
Laminate-1.Set-RP, 4, 4
Laminate-1.Set-RP, 5, 5
Laminate-1.Set-RP, 6, 6
** 
** CONTROLS
** 
*Controls, reset
*Controls, parameters=line search
, , , , 
*Controls, parameters=field, field=displacement
, 0.05, , , , , , 
** 
** OUTPUT REQUESTS
** 
*Restart, write, overlay, frequency=10
** 
** FIELD OUTPUT: F-Output-1
** 
*Output, field
*Node Output
RF, U
*Element Output, directions=YES
SDV, SE, SF
** 
** HISTORY OUTPUT: H-Output-1
** 
*Output, history
*Node Output, nset=Laminate-1.Set-RP
RF1, U1
*End Step