In this blog post, we’ll show you how to build a tiny yet highly useful python script that can easily be modified to include more useful features. This solution is based on built-in functionality, i.e., no additional installation or investment is required.
A batch in this setting is a collection of Abaqus jobs. These can be the cause of several load-cases and geometries, parameter studies and design of experiments, or just a mix of everything. Regardless, the possibility to run a batch of jobs without any human interference is an essential feature in the FEA analyst toolbox.
There are many techniques and tools that are designed to do exactly this – from advanced third-party queuing systems to OS-dependent batch scripts. One-size fits none as team-size, hardware, OSes, and usage poses different needs from one company to the next when it comes to the implementation of FEA.
Requirements for the Batch Script is as follows
Every Abaqus installation comes with a python interpreter available as “abaqus python <script>”, this means that on every machine “abaqus job=” is available, we have access to “abaqus python”.
Input files in a standing directory can be found using glob – a unix style pathname pattern expansion. Loop over the elements in this pattern expansion and create abaqus execution commands, add “int” for “interactive” to ensure that the jobs are executed sequentially. Issue this command using sub process library. Log the time this command takes and keep the seconds per job in log.txt – which is helpful when planning future batch runs.
PS: You might want to edit your environment file and set ask_delete=OFF and handle the existence of .odb files in the script (keep or overwrite).
This script can be used as a building block to which functionality can be added as needed. Below are some ideas of useful features:
Regardless of feature additions, you are now able to keep your office or server-room running during your off-hours!
Want to talk about scripting? Reach me at ebbe.smith@technia.com!