Accession Number:

ADA056701

Title:

Depth and Motion Prediction for Earth Penetrators

Descriptive Note:

Final rept. Oct 1977-Jan 1978

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s):

• Bernard, Robert S.

Report Date:

1978-06-01

Pagination or Media Count:

31.0

Abstract:

Empirical equations of motion have been developed for projectile penetration in soil and rock. The soil penetration analysis uses Youngs S- number as the penetrability index. The rock penetration analysis calculates resistance-to-penetration using density, strength, and Rock Quality Designation. Closed-form equations are obtained for final penetration depth in single-layer targets of soil or rock. Numerical solutions are obtained for multiple-layer targets. For targets with accurately known properties, the final-depth results are accurate within or - 20 percent. Author

Descriptors:

• *PROJECTILES
• *SOIL RESISTANT PROPERTIES
• *EARTH PENETRATING DEVICES
• SIMULATION
• DENSITY
• EQUATIONS OF MOTION
• LAYERS
• ROCK MECHANICS
• DEPTH
• PENETRATION
• MATHEMATICAL PREDICTION
• SHOCK RESISTANCE
• TARGET STRENGTH

Subject Categories:

• Soil Mechanics
• Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE