Scholarlink

<p>Ballistic standards require body armor to withstand multiple projectiles without getting penetrated. The response of a ceramic/composite armor, in terms of its back face signature (BFS) when eight hardened steel cores (HSC) at 715 m/s are fired on it, is studied numerically using finite element (FE) method. The armor consists of ceramic, hard and soft ultra-high molecular weight polyethylene (UHMWPE) layers and foam. The FE model of the projectile and armor was developed in LS-Dyna and different material models were employed to constitute their behaviors. Initially, the influence of contact conditions between ceramic tiles forming the strike face of the armor panel was studied in terms of damage propagation in adjacent tiles. Further, the deformation of the various layers and penetration of ceramic tiles and hard UHMWPE along with the reduction in length of projectiles were investigated. The developed FE model was validated by comparing the average BFS and bullet length reduction values against experimental data. It was found that although significant bullet impact energy was absorbed in damaging ceramic tiles, it still influenced the displacement response of hard armor panel (HAP) layers. The delamination lengths between composite layers are also discussed. The presented modeling techniques and developed FE model may help in improving the design of bulletproof armor panels capable of withstanding multiple bullet impacts.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Performance of Ceramic/Ultra-high Molecular Weight Polyethylene Composite Body Armor Panel Against Multiple Hardened Steel Core Projectile Impacts

  • 期刊论文

  • 发表日期：

    2025年8月25日

查看全文
  • Ankush Thakur,
  • Joseph Solomon,
  • Mohit Gupta,
  • Nitin Thakur,
  • Puneet Mahajan

摘要

Ballistic standards require body armor to withstand multiple projectiles without getting penetrated. The response of a ceramic/composite armor, in terms of its back face signature (BFS) when eight hardened steel cores (HSC) at 715 m/s are fired on it, is studied numerically using finite element (FE) method. The armor consists of ceramic, hard and soft ultra-high molecular weight polyethylene (UHMWPE) layers and foam. The FE model of the projectile and armor was developed in LS-Dyna and different material models were employed to constitute their behaviors. Initially, the influence of contact conditions between ceramic tiles forming the strike face of the armor panel was studied in terms of damage propagation in adjacent tiles. Further, the deformation of the various layers and penetration of ceramic tiles and hard UHMWPE along with the reduction in length of projectiles were investigated. The developed FE model was validated by comparing the average BFS and bullet length reduction values against experimental data. It was found that although significant bullet impact energy was absorbed in damaging ceramic tiles, it still influenced the displacement response of hard armor panel (HAP) layers. The delamination lengths between composite layers are also discussed. The presented modeling techniques and developed FE model may help in improving the design of bulletproof armor panels capable of withstanding multiple bullet impacts.