Damage and plasticity models in Ansys

[Pulsar123]

Dear all,

I am trying to model a realistic bullet impact simulation in Ansys Explicit Dynamics. I have successfully run the simulation several times on various surfaces. I have used Johnson-Cook parameters and specified material properties. However, I am not sure if Ansys automatically accounts for kinematic strengthening and other stress/strain effects on the materials. Any insights would be appreciated as to how much information I am required to input to maximise accuracy of the damage and plasticity models.

(Note: I do not have any self-conducted experimental data to make a comparison to).

Thank you very much.

 

[FEA way]

Johnson-Cook model includes hardening, there’s no need to specify it separately. Check the definition of this material model (equation) and you will see which factors are included and how they are accounted for.

However, you may also want to include strain rate dependence and damage/failure behavior. Those require additional constants.