Further Development of a Model for Rod Ricochet

Report No. ARL-RP-164
Authors: Steven B. Segletes
Date/Pages: February 2007; 42 pages
Abstract: A ricochet model for long rods developed by the author has been revisited in search of solution efficiencies. By replacing a moment-of-momentum governing equation in the original model with a simpler minimization constraint, a solution technique has been developed that avoids the complexity of an iterative solution that characterized the original work. The revised model retains key elements of the original model, including: ricochet by way of plastic hinge formation; rod rebound from the target?s ricochet surface; and target gouging as a means to redirect the target force?s line of action. Finally, the ricochet equations are analytically rendered so as to give a keen sense of how the critical obliquity for ricochet varies as a function of the initial conditions of the ballistic engagement.
Distribution: Approved for public release
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Last Update / Reviewed: February 1, 2007