Resistant Performance Of Perforation Of
Layered Targets Using An Estimation Procedure
With Marine Application
Author(s)
C.-C. Liang, T.-L. Teng & P.-W. Wu
Abstract
This paper presents a semi-empirical method to study the resistant performance
of perforation in protective structures for fragment effects, such as residual
velocity after penetration of structures between source of explosion and the
target. An estimation procedure is established based on the concepts of the
conservation of momentum, impulse-momentum law, and conservation of
energy. Experimental results of the test of Almohandes et al. are adopted to
check the residual velocity of multi-layered targets. The results of the
verification are good in terms of agreement for impact velocities ranging from
700 to 800 m/s, when the ratio of the projectile length to the projectile diameter
(i.e. L/D) is 4.2, and the average residual velocity error of single, double- or
triple-layered targets range approximately from 4.42 to 8.40%. The ballistic
performance is best for the double target when the ratio of the first layer
thickness to the total thickness (i.e. t1/(t1+t2)) is about 0.75, and the worse
performance occurs when the ratio t1/(t1+t2) is 0.5. An air gap slightly influences
the resistant performance of perforation in multi-layered targets. These results
may serve as a useful reference for designers.
Keywords: projectile, impact, penetration, perforation, multi-layered targets.
Keywords
projectile, impact, penetration, perforation, multi-layered targets.
Related Book
Other papers in this volume
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