How can i show the propagation after initail crack is done?

hi. I am just abaqus user.

In workshop and lectures for XFEM, I had followed  to example in XFEM workshop. But I could not show a propagation of the crack without initial crack.

This problum is just abaqus version?( now, I am using as 6.11.)

Additionally, I also want to get a material that is explained to construct a model for a tensile specimen.

Especially, I want to show crack propagation during testing for a tensile specimen.

 

Thanks.