Theoretical and Experimental Analysis of the High-Velocity Interaction of Solid Bodies in Water

Methods of estimating the penetrating ability of a metal striker into an aquatic medium and its interaction with obstacles in it have been developed. The penetration of a needle-shaped metal body into a water with a high velocity and its interaction with a metal obstacle found in it was investigated and calculated within the framework of continuum mechanics with the use of an elastoplastic model for definition of the solid body with account for its destruction and a hydrodynamic model for the water. It has been established that in the case where the indicated striker enters into the water with a velocity of 1.0–2.5 km/s, the developed-cavitation regime is realized, the head of the striker is subjected to the plastic deformation, and, in some cases, it is destroyed.