Computer modeling of the dynamics of high-velocity impact and accompanying physical phenomena

Some results of mathematical modeling of high-velocity collisions of solid deformable bodies are presented. A model is presented of a porous elastoplastic medium whose matrix undergoes a polymorphic phase transition during deformation, and approaches to the calculation of dynamical failure are examined. Finite-difference methods for solving boundary-value problems are briefly reviewed. The interaction of projectiles, having different shape, with different targets (semiinfinite, two-layer, separated) is investigated and the process of spall failure in porous media and media undergoing a polymorphic phase transition is examined on the basis of mathematical modeling.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 8, pp. 5–48, August, 1992.