Here I am attaching the APDL for J-integral evaluation in ANSYS. Check the first part of the code, ie, integration of strain energy density over a path. I guess this will be useful to you.

Here I am attaching the APDL for J-integral evaluation in ANSYS. Check the first part of the code, ie, integration of strain energy density over a path. I guess this will be useful to you.

I think J-Integral is a different story. I think If you can do it by export the points to text file then import it from MS Excel software. From Excel you can manipulate the data easily.