Stress Intensity Factors calculation

Hello all.

For the below cases: 

1) Penny-shaped crack in a cylindrical bar

2) Penny-shaped crack in an infinite body

3) Semi-elliptical surface crack 
I need to calculate the stress intensity factors by using ABAQUS. 

Please help me how can I start and provide me any tutorial/example if you have.  I shall be grateful to you. 

Sincerely

sufian