Impact shock and penetration fragmentation in porous media
Abstract
In this paper, we discuss experimental, analytical, and computational techniques for studying the high velocity interaction of solid bodies with low density media. We assume that the velocity of the interaction is such that compressible effects in the solid are important. We are particularly interested in the dynamic mechanisms of deformation, erosion, and breakup which dominate the solid response at these high velocities. This is a problem of considerable current interest. Applications include the atmospheric propagation of high velocity aerosols, such as those that might be created in certain kinds of nuclear reactor accidents and explosive weapon accidents. An even more novel application is to the study of the impact of astrophysical bodies, such as meteors, asteroids, and comet fragments into planetary atmospheres. There is significant concern over the threats posed by impacts of these kinds on the earth. We will discuss the application of our methodology to understanding these impacts. In particular, we suggest that the experimental technique we present is applicable to scaled laboratory simulations of some of the phenomena that are believed to be important in atmospheric impacts.
- Publication:
-
Presented at the 1994 Hypervelocity Impact Symposium
- Pub Date:
- 1994
- Bibcode:
- 1994hvi..sympR..16T
- Keywords:
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- Fragmentation;
- Hypervelocity Impact;
- Impact Damage;
- Low Density Materials;
- Penetration;
- Porous Materials;
- Shock Loads;
- Computerized Simulation;
- Deformation;
- Erosion;
- Foams;
- Hydrodynamics;
- Mathematical Models;
- Shoemaker-Levy 9 Comet;
- Terminal Ballistics;
- Astrophysics