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Ballistic performance of composite metal foam against large caliber threats

机译：复合金属泡沫对大口径威胁的弹道性能

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摘要

The goal of this study is to investigate the effectiveness of Composite Metal Foam (CMF) armors against 0.50 caliber ballistic threats. A hard armor was manufactured using a sandwich panel construction consisting of a ceramic faceplate, a CMF core, and a thin aluminum back plate. The hard armor system was tested against 0.50 caliber (12.7 x 99 mm) ball and armor piercing (AP) rounds. The CMF armors were tested with a variety of areal densities at impact velocities between 500 and 885 m/s. The armors stopped the threats at speeds up to 819 m/s without penetration. The CMF layer was found to absorb 73-76% and 69-79% of the kinetic energy of the ball and AP round respectively. When compared to rolled homogeneous steel armor (RHA), the CMF hard armors, in their current unoptimized condition, have a mass efficiency ratio of approximately 2.1. The CMF armor offers a much needed weight savings without sacrificing protection. Finite element analysis was completed using ANSYS/AUTODYN Explicit Dynamics solver to study the material interactions and impact. The results are shown to be in good agreement with the experimental findings.
机译：这项研究的目的是研究复合金属泡沫（CMF）装甲对0.50口径弹道威胁的有效性。使用由陶瓷面板，CMF芯和薄铝背板组成的夹心板结构制造了坚固的装甲。硬质装甲系统针对0.50口径（12.7 x 99毫米）的球和装甲穿甲（AP）弹药进行了测试。 CMF装甲在500至885 m / s的冲击速度下以各种面密度进行了测试。装甲以高达819 m / s的速度阻止了威胁，没有穿透。发现CMF层分别吸收球和AP轮的73-76％和69-79％的动能。与轧制均质钢装甲（RHA）相比，CMF硬装甲在当前未优化的条件下，其质量效率比约为2.1。 CMF装甲在不牺牲保护性的前提下可减轻重量。使用ANSYS / AUTODYN Explicit Dynamics求解器完成有限元分析，以研究材料的相互作用和影响。结果表明与实验结果非常吻合。

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  • 来源
    《Composite Structures》 |2019年第10期|111032.1-111032.12|共12页
  • 作者

    Marx Jacob; Portanova Marc; Rabiei Afsaneh;

  • 作者单位

    North Carolina State Univ, Dept Mech & Aerosp Engn, Adv Mat Res Lab, Raleigh, NC 27695 USA;

    US Army Combat Capabil Dev Command Aviat & Missil, Aviat Dev Directorate, Ft Eustis, VA USA;

    North Carolina State Univ, Dept Mech & Aerosp Engn, Adv Mat Res Lab, Raleigh, NC 27695 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composite metal foam; Ballistic testing; ANSYS AUTODYN; Vehicle armor; Hard armor;

    机译：复合金属泡沫;弹道检测;ANSYS AUTODYN;车辆盔甲;硬甲;

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