A NUMERICAL ANALYSIS OF THE BALLISTIC PERFORMANCE OF A 6.35-MM TRANSPARENT POLYCARBONATE PLATE

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Authors
  1. Nandlall, D.
  2. Chrysler, J.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
Polycarbonate is a lightweight polymer commonly used for transparent armour. In this study, an attempt is made to examine the ballistic performance of a 6.35-mm polycarbonate plate struck by spherical and fragment-simulating projectiles. The ballistic limits of the target plate were obtained for three different sizes of spherical projectiles and two different calibres for the fragment-simulating projectiles. The results obtained showed that, in addition to the mass, the geometry can significantly affect the ballistic performance of a target for these small-calibre projectiles. It was shown that the ballistic limit of the polycarbonate plate was smaller for a spherical projectile than a fragment simulating projectile of an equivalent mass. The crater development and plug formation for both the spherical and fragment-simulating projectiles were examined based on observations of the localisation of the high strain rate region and the distribution of the effective plastic strain. It was found that the mode of plug formation of the two types of projectiles differs significantly. Fragment simulating projectiles created larger plugs.
Keywords
Hydrocode simulation;Ballistic impact;Transparent armour;High velocity impact;Numerical simulation;Polycarbonate
Report Number
DREV-TM-9834 — Technical Memorandum
Date of publication
01 Dec 1998
Number of Pages
32
DSTKIM No
99-00065
CANDIS No
509916
Format(s):
Hardcopy;Document Image stored on Optical Disk

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