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How can I get in Abaqus (XFEM) the Griffith' energy release rate G per time increment?

I want to visualize my results of the XFEM crack growth in form of a diagram with the time increments or the crack length on the horizontal axis and the Griffith' energy release rate G or the stress intensity factor K on the vertical axis. I am using the energy-based damage model.

I don't know, where to activate those values in the Output History. The best solution for me is, if the energy release rate G can be transformed into the stress intensity factor.

When I do it for my own, I can use the formula: G = KI² / E'. In my case, I have an axis-symmetric problem (crack propagation in a screw thread). Which E' can I use? That one of a plane strain problem type (E' = E/(1-v²) )?

 

Thank you for help,

 

Thomas

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