Rock Cutting Simulation : Help needed

Hi all , 

i am trying to simulate cutting mechanism of rock using disc cutter and the boundary conditions are similar to the reference paper/ journal reffered. Inspite of maintaining similar conditions , i am not getting the contact force similar to the Figure 6 of reference . 

Attached / Given below is the link to download the input k file, Rcforc Ascii, movie file and the referred pdf.

please let me know how to debug this issue

https://drive.google.com/file/d/1rjwNTzlQZsFJhBr3EnzIFYZU9n-d0jKP/view?usp=sharing