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Simulation of armor perforation by long rod projectiles at normal incidence.

Simulation der Perforation einer Panzerung mit einem Stabprojektil bei senkrechtem Auftreffen
: Weber, K.; Mayseless, M.; Chazan, G.; Kivity, Y.; Hohler, V.; Stilp, A.J.

Proceedings of the 42nd Meeting of the Aeroballistic Range Association
Aeroballistic Range Association (Meeting) <42, 1991, Adelaide>
Conference Paper
Fraunhofer EMI ()
Endballistik; KE-Penetrator; simulation; terminal ballistic

This work presents an analysis of the penetration process of long rod projectiles into finite thickness targets. The study is based on detailed computations using a two-dimensional hydrocode, and comparison with results of laboratory experiments. The problem under consideration is the perforation of rolled homogeneous armor (RHA) plates by a 20 mm diameter tungsten projectile with a spherical nose and a length to diameter ratio of 6. Two plate thicknesses were tested: 40 mm and 70 mm. The projectile velocity was 1250 m/s. The computations were carried out with the PISCES 2DELK code, employing a second order numerical scheme, and a multimaterial Eulerian flow solver. The experiments were carried out at the ballistics laboratory of the Ernst Mach Institute. The numerical calculations were successful in simulating the main features of the perforation process, namely: crater diameter, projectile residual length and velocity, and debris cloud shape. To obtain a good agreement between experi ments and simulations, it was necessary to take into account the strain hardening of the RHA steel.