Extracting stress tensor or effective stress

rlaw

Hi There,

Looking to extract the effective stress or stress tensor from the model output to save in .vtk format. Would there be any magic words to put into requested_outputs to retrieve this?

Thanks ❄️ ,
Rob

mathieumorlighem

Hi @rlaw

Assuming that you are in 2D, you can request any of the following: 'DeviatoricStresseffective','DeviatoricStressxx','DeviatoricStressxx','DeviatoricStressxx'. Alternatively, you can also call the function mechanicalproperties (and provide any vx, vy fields) to compute all strain-rate and stress components, so you would not need to re-run your model.
I hope this helps!
Mathieu

heleneseroussi

Hello Rob,

Yes, you can request to have the components of the stress tensor calculated and included in the results. Here are some options you can use: StressTensorxxEnum, StressTensorxyEnum, StressTensorxzEnum, StressTensoryyEnum, StressTensoryzEnum, StressTensorzzEnum, StressMaxPrincipalEnum, DeviatoricStressxx, etc. You should request them using something like:
md.transient.requested_outputs = {'default','DeviatoricStressxx','StressTensorxx'};

Best
Helene

rlaw

Thanks!!