Principal stresses

By calculating a 3d model with calculix I can visualize the principal stresses and the principal strains. However, the output .frd file does not include them, it only contains the components of the tensors. Is there a way to get the main values in a file?

You probably have to look at the table for the *NODE FILE card.
Check this,
a bit dated though.

Thanks for answering. But, if I’m not wrong, with * NODE FILE you can get the tensor values, and the worst principal stress and strain values (only in certain cases), not each of the three principal stress and strain values. Please correct me if I’m wrong.

As far as I know, you have to calculate them yourself.