Create a new field output from strain components

Hi Abaqus Experts;


I want to create a field output to calculate volumetric plastic strains. However, in the Create Field Output window in Abaqus, the individual components of plastic strain aren't accessible. Is there a way to achieve this using the ODB file and Python scripting? I’d prefer not to use the UVARM subroutine, as that would require rerunning the simulation.