Johnson Cook

If failure dependent tests have been performed (tension, shear, compression tests) and the information is available, to include failure criteria in the curves fit.

1. Select Johnson Cook (RADIOSS) from the Select Failure list.
2. The chart changes to rupture strain vs triaxiality and plots the Johnson&Cook curve. Three red points define compression, shear and tension.
   Using the values and sliders the points can be moved.
3. Define the failure criteria in the Select Outcome list and create the material card. If created, strain rates are taken into an account.

   
   
   Figure 1. Failure - Johnson Cook Curve