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A shock-wave model of the effect of superdeep penetration of powder particles into metallic materials

100%

Kheifets A. E. , Zel'dovich V. I. , Frolova N. Y. , Khomskaya I. V.

tom Vol. 22, No. 2

117--121

A shock-wave model of the effect of superdeep penetration of explosion accelerated powder particles into metallic materials has been created. A criterion for the phenomenon proceeding by explosive loading of a target by a flow of particles is obtained. It is established that a flow action results in an homogeneous radial stretching of the target material. The stretching occurs by mobile cavities which carry particles into the target material.

The physics of superdeep penetration phenomenon

100%

Owsik J. , Jach K. , Usherenko S. , Usherenko Y. , Figovsky O. , Sobolev V.

tom Vol. 49, no 1

3-25

While solving the problem of superdeep penetration, a dilemma appears: will we deal with an unusual mechanism of effective transformation of impact energy of a clot into energy of separate strikers motion or will it be a process of additional energy emission? It was shown that all possibilities of explanation of the decrease in resistance to a striker at its movement in a solid body due to the mechanism of economical use of the kinetic energy, are considered (so-called dead end was stated). Estimations of a minimum energy necessary for superdeep penetration have been performed. The obtained results have proved that the kinetic energy of a collision of a clot of discrete (separate) strikers with a barrier makes only 5-10% of the total amount of the energy loss. It was shown that the process of cavitation of microcavities in dense plasma is the source of additional energy, providing implementation of superdeep penetration.