Accession Number:

ADA048644

Title:

Numerical Analyses of Penetration Dynamics in Support of Investigations of Scaling Relations for Earth Penetrators.

Descriptive Note:

Final rept.,

Corporate Author:

CALIFORNIA RESEARCH AND TECHNOLOGY INC WOODLAND HILLS

Personal Author(s):

• Wagner,Mark H.
• Fulton,Christopher C.

Report Date:

1977-11-01

Pagination or Media Count:

37.0

Abstract:

Two finite-difference WAVE-L code solutions of projectile penetration have been conducted to assess the effect of projectile sectional pressure WA on penetration dynamics. The results are being used in an investigation of penetration scaling relations underway at the Waterways Experiment Station. The penetrator problems consisted of the normal impacts of rigid-body projectiles into sand targets at a velocity of 200 ftsec. The projectiles were 6 in. in diameter with a 6-in. long, ogive nose CRH 1.25. Two penetrator weights were selected, 141.4 lb Case 1 and 424.1 lb Case 2, to give projectile sectional pressures of 5 psi for Case 1 and 15 psi for Case 2. Detailed results of the numerical solutions, including time histories of the penetration dynamics variables, force loading distributions, and field plots of the target response, are presented in the report.

Descriptors:

• *PROJECTILES
• *EARTH PENETRATING DEVICES
• VELOCITY
• IMPACT TESTS
• LOADS(FORCES)
• NUMERICAL ANALYSIS
• SAND
• DEPTH
• PENETRATION
• MATHEMATICAL PREDICTION
• VERTICAL ORIENTATION
• MATHEMATICAL ANALYSIS
• DECELERATION
• FREE DROPPING

Subject Categories:

• Mining Engineering
• Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE