Methods and tools for estimation of shaped charge penetration

Authors:

  • Fredrik Bultmark
  • Bo Johansson

Publish date: 2009-12-31

Report number: FOI-R--2856--SE

Pages: 14

Written in: Swedish

Keywords:

  • SC
  • shaped charge
  • jet formation
  • fragmentation
  • penetration
  • RSVID
  • HIPEN
  • LS-DYNA
  • GRALE

Abstract

A fundamental ability during military operations is to be able to protect facilities, field fortifications and mobile military units and attacking threats. Shaped charges in this pose a serious threat due to their high penetrative capacity. In this report some tools that can be used to estimate the penetration of single or multilayered targets are described. To access the penetrative capability three stages needs to be dealt with: . Jet formation . Jet fragmentation (if any) . Penetration of the jet or jet fragments In the report programs and analytical tools to describe the stages are presented and the way they treat the related problems is discussed. One of the conclusions is that the existing tools are capable of estimating the penetration of both real and fictitious shaped charges in targets composed of one or more materials. To certify the validity of the theoretical results a comparison to a larger set of experimental results is needed, and these results may also be used to find the most suitable values of the empirical parameters included in the models for shaped charge jet formation, fragmentation and penetration.