Abaqus Field output

[AOG01]

Hi all,

I'm using python to run abaqus and I'm acquiring data for displacement and stresses.

session.writeFieldReport(fileName='LocandstrsL.rpt', append=OFF,sortItem='Node Label', odb=odb, step=2, frame=1, outputPosition=NODAL,variable=(('U', NODAL, ((COMPONENT, 'U1'), (COMPONENT, 'U2'),(COMPONENT, 'U3'), )), ('S', INTEGRATION_POINT, ((INVARIANT,'Mises'), )), ))

The results that I get only include displacements but no stresses!

Can anyone help with this issue?

Thanks in advance,
Tamer