ODB reading Python scripting issues 2

[Demetrio92]

Hi everibody,

I'm trying to work on odb files via Python script. More in detail, I want to extract the E11 strain component value for each frame (61 frames) of a step (Implicit dynamic step) for some nodes which I'm interested in, and save these values into a file.

The script I've written works fine except for two things:
1) the odb reading is extremely slow: extracting the 61 values for the sets of interest (which are more or less 40) takes more than 1 hour (the odbs size is around 5 GB);

2) the odb increases its size while I'm reading data from it! It grows and shifts from 5GB to 200GB or more ! Once the reading is completed, I can open the odb and apparently nothing has changed, apart from the size . How can this be possible?

I'm new to python scripting, so I'm probably missing something! Attached you can find the script.

Kind regards,
Demetrio

 

[Mustaine3]

1. Try to loop first through the frames and in that through the sets. With that you can longer hold the variable E and just have to modify the subset. That can improve the speed.

2. Check what's happening when using the readOnly parameter at openOdb.

 

[Demetrio92]

Dear Mustaine3,
thank you very much, I'll try to follow your advices!