The Effect of Styrofoam Interlayers in Fragment Witness Packs

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Authors
  1. McIntosh, G.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
Witness packs are used to obtain the mass-velocity distribution of fragments generated, for example, at complete perforation of a target. A witness pack consists of several metallic layers of various materials and thicknesses spaced evenly. The STANAG 4190 description requires a low density Styrofoam spacer between the layers. Previous computer simulations of witness packs have been reported but were simplified by using air gaps. This document describes new computer simulations with a low density Styrofoam layer between each layer. It was difficult to describe the Styrofoam mechanical properties exactly but an approximate representation was used. The study presented in this memorandum shows that the Styrofoam does have a significant effect on the results of the mass-velocity distribution and therefore, one should be very careful when comparing simulations done with and without the Styrofoam to experimental results.
Keywords
Behind-armor debris (BAD);Behind armor effects
Report Number
DREV-TM-1999-110 — Technical Memorandum
Date of publication
01 Sep 1999
Number of Pages
23
DSTKIM No
CA000275
CANDIS No
511634
Format(s):
Hardcopy;Document Image stored on Optical Disk

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