Explicit Dynamics FEM. Bullet impact on steel
This is an example of explicit dynamics. A bullet hits a mild steel. Half of the model has been simulated, (symmetry can be exploited more, quarter of the model or even 2D case). The mild steel proved to be bulletproof.
Inspiration of this case is the following paper (Bullet Impact on Steel and Kevlar®/Steel Armor – Computer Modeling andExperimental Data. Sandia National laboratories. Dale S. Preece, Vanessa S.Berg).
Basic dimensions (in mm) of the bullet and the steel wall are depicted below:
The bullet consists of lead and copper and has a velocity of 842 m/s (see following figure)
And now some videos: