ANSYS explicit dynamics doesn't use APDL command, and no special elements would be needed.
You can look at the damage contour plot, check the damage pattern, interpret the results to see if there is fracture or not.
When you have failure criteria, please note that these are different from erosion criteria. Please remember that erosion removes cells from the calculation, so it's typically not representative of the physical process but, rather, a method we use to prevent the timestep from getting too small.
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