Numerical Analysis of Projectile Impact and Deep Penetration into Earth Media
Final rept. 1 Dec 1973-30 Nov 1974
CALIFORNIA RESEARCH AND TECHNOLOGY INC CHATSWORTH
Pagination or Media Count:
A study was carried out to examine the utility, and some of the limitations, of using a finite-difference Lagrangian code to analyze relatively deep penetrations of projectiles into earth media. Numerical solutions were obtained for the normal impact of an 8-in. dia, 602-lb steel ogival projectile at 2000 fps into a soilshale layered target. Two types of analyses were performed. In the first, the soil response, penetration dynamics, and projectile response were analyzed as one problem. The projectile was treated as an elastic-plastic, or deformable body, in order to determine the internal stress response. In the second analysis, the projectile was treated as a rigid body, and its penetration to a depth of 22 ft was calculated.
- Soil Mechanics