Restart an analysis

[phanhung]

Hi

i am working with dynamic/explicit problem, the analysis took me a long time. I got the result in 1 second, and now i want to increase the time into 2 seconds, if i start to run from the begining, i take a lot of time! i would like to run my analysis after frist 1 second, how should i do.??

 

[bassmanjax]

Hi

As long as you have the restart (.res) file, as well as the other files listed in section 9.1.1 of the manual, you should be able to do a restart analysis.

If you didn't have a *RESTART, WRITE in your original analysis, sorry to say it, but you will have to re-run the original analysis.

Regards

Martin

 

[phanhung]

Hi
Sure that i have .res, i got result for first 1 second. And now i change the time period to 2, and the problem is that i don't know how to continue my analysis without starting from the beginning. How to run the analysis and which is the command format to run it or something else i have to put in .inp file???

 

[bassmanjax]

Hi

Have a read of section 9.1.1 "Restarting an analysis".

In a new input file, you can use the *RESTART, READ option to read in your results up to 1 sec, then add an explicit step in the input file which is the same as the explicit step in your original file. The only downside is that you'll have two sets of results (0 > 1 sec and 1 > 2 sec).

You also need to use the 'oldjob=' parameter on the abaqus command line.

Regards

Martin

 

[phanhung]

Hi

thanks you very much, i will try it, i have read "restarting an analysis" many times, but i didn't know how to deal with my problem!

Best regards
Phanhung