Further Development of a Model for Rod Ricochet
Reprint Sept 2004-Mar 2005
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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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 targets 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.
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