Dynamic Auxiliary Fields for Interaction Integral

Dear friends,

I am writing an XFEM code for dynamic crack propagation and interested in using the Interaction Integral method (as in Rethore et al. (2005)) for computation of Stress Intensity Factors (SIFs). I wonder if anyone knows what kind of dynamic asymptotic crack tip auxiliary fields could be applied to the method for computation of SIFs for dynamically propagating crack.

 

Regards

Matin