Penetration of yawed projectiles

Technical Report · Mon Oct 08 00:00:00 EDT 1990

DOI:https://doi.org/10.2172/6375338· OSTI ID:6375338

Reaugh, J E

We used computer simulations and experiment to study the penetration of tungsten-alloy projectiles into a thick, armored steel target. These projectiles, with length-to-diameter ratios of 4, strike the target with severe yaws, up to 90{degree}(side-on-impact), such as might be induced in an originally longer projectile by a multiple-spaced plate array. In this study, we focus on the terminal ballistics of these projectiles and ignore how the yaw was induced. We found that the minimum penetration depth occurs at 90{degree}yaw. This case is well approximated by the two-dimensional plane-strain penetration of a side-on cylinder. The ratio of penetration depth to diameter, P:D, for this case is larger than that for a sphere because the plane-strain geometry lacks hoop stress, which is activated in axisymmetric geometry. A more surprising result of work is that the penetration at 60{degree} yaw is only slightly deeper than that of the side-on impact. 8 refs., 15 figs., 3 tabs.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6375338
• Report Number(s): UCRL-ID-104890; ON: DE91001084
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
PROJECTILES
COMPUTERIZED SIMULATION
ARMOR
DENSITY
EXPERIMENTAL DATA
IMPACT SHOCK
MILITARY EQUIPMENT
STEELS
STRESSES
TUNGSTEN ALLOYS
WEAPONS
ALLOYS
DATA
EQUIPMENT
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
NUMERICAL DATA
PHYSICAL PROPERTIES
SIMULATION
450000* - Military Technology
Weaponry
& National Defense