David Weed
Ansys Employee

Thanks, I can now see that the x-axis is oriented correctly. I don't see a gap between the plate and fillet weld in the picture shown. If you post-process the contact status does it indicate that there is a measurable gap? You may alternatively consider using shared topology to join the two parts. Note that if contact elements are within the vicinity of the crack area, this could negatively impact the fracture parameter calculations. Using shared topology eliminates the need for contact elements and also gives a conformal mesh across the boundaries of the two bodies.