Accession Number : ADA318759

Title :   Three-Dimensional Analysis of Penetration into Geological Media.

Descriptive Note : Technical rept. 25 Apr 91-1 Dec 94,

Corporate Author : SCIENCE APPLICATIONS INTERNATIONAL CORP MCLEAN VA

Personal Author(s) : Fry, Mark A.

PDF Url : ADA318759

Report Date : 01 NOV 1996

Pagination or Media Count : 19

Abstract : The Defense Special Weapons Agency's Conventional Weapons Effects Program requires state-of-the-art analysis of penetrator-target interaction. Science Applications International Corporation (SAIC) has conducted a program that applies sophisticated Eulerian codes to accurately capture the physics of the penetration process. Penetration events are an important aspect of the interaction of non-nuclear munitions with structures. The penetrator exhibits near rigid body motion, at velocities below a few thousand feet per second, as it moves through the target producing a material boundary layer between the outer surface of the penetrator and the target material. These effects require codes that can maintain distinct material boundaries while advecting a solid with an attached boundary layer. In general they can be simulated using both Lagrangian and Eulerian hydrocodes, but we have shown the robustness of using Eulerian codes for simulating the penetration event.

Descriptors :   *THREE DIMENSIONAL, *PENETRATION, *AMMUNITION, *GEOLOGIC MODELS, COMPUTER PROGRAMS, WEAPONS, ALGORITHMS, SIMULATION, MATERIALS, STRUCTURES, MOTION, BOUNDARY LAYER, SOLIDS, TARGETS, CODING, MATHEMATICAL ANALYSIS, MEDIA, EULER EQUATIONS, ADVECTION, LAGRANGIAN FUNCTIONS, TARGET ACTIVATED MUNITIONS, COMPUTER BENCHMARKING.

Subject Categories : Numerical Mathematics
      Computer Systems Management and Standards
      Cybernetics
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE