Calculated concrete target damage by multiple rod impact and penetration

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The effect of enhanced crater formation has been demonstrated experimentally when multiple and delayed shaped charge jets impact and penetrate concrete. The concept for enhancement utilizes a single follow-on jet at the centerline of holes produced by multiple precursor jets penetrating the surrounding the region. Calculations of the 3D crater enhancement phenomena have been conducted with multiple rods to simulate the steady state portion of the multiple jet penetration process. It is expected that this analysis methodology will be beneficial for optimization of the multiple jet crater enhancement application. We present calculated results using ALE3D where the model uses the ... continued below

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Pincosy, P A & Murphy, M J December 29, 2006.

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The effect of enhanced crater formation has been demonstrated experimentally when multiple and delayed shaped charge jets impact and penetrate concrete. The concept for enhancement utilizes a single follow-on jet at the centerline of holes produced by multiple precursor jets penetrating the surrounding the region. Calculations of the 3D crater enhancement phenomena have been conducted with multiple rods to simulate the steady state portion of the multiple jet penetration process. It is expected that this analysis methodology will be beneficial for optimization of the multiple jet crater enhancement application. We present calculated results using ALE3D where the model uses the standard Gruneisen equation of state combined with a rate dependent strength model including material damage parameters. This study focuses on the concrete material damage model as a representation of the portion of the target that would eventually be ejected creating a large bore-hole. The calculations are compared with the experimental evidence and limitations of the modeling approach are discussed.

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PDF-file: 10 pages; size: 0.6 Mbytes

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  • Presented at: 23rd international symposium on ballistics, Tarragona, Spain, Apr 16 - Apr 20, 2007

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  • Report No.: UCRL-CONF-227036
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 907864
  • Archival Resource Key: ark:/67531/metadc889833

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  • December 29, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 6, 2016, 7:37 p.m.

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Pincosy, P A & Murphy, M J. Calculated concrete target damage by multiple rod impact and penetration, article, December 29, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc889833/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.