Toward a Characterization of the Debris Cloud Created in a Hypervelocity Impact on a Thin Plate.

摘要

Semi-analytical lethality assessment models fall into one of two general categories: discrete particle models and expanding shell models. Discrete particle models account for and track only a small number of solid fragments in a debris cloud generated by a hypervelocity impact. They are best suited for impact scenarios in which melting and/or vaporization of the projectile and target materials do not occur. Expanding shell models assume that all of the debris cloud material is homogeneously distributed over a uniformly expanding spherical shell in those impact scenarios where melting and/or vaporization of the projectile and target materials do occur. A lethality assessment model that considers the creation and subsequent effects of debris clouds containing all three states of matter is needed. This report describes the results of an investigation into the composition of the material in a debris cloud generated by a hypervelocity projectile impact. The work completed represents the first step in a long-term research program whose overall objective is to develop a general model of the response of a target structure to a hypervelocity impact over the 4-16 kilometers per second impact regime.... Hypervelocity impact, Mie-Gruneisen, Hugoniot, Tillotson, Equation of state, Shock waves, Debris cloud.