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| Study on the Anti-penetration Performance of Thin Metallic Plate Against Ordinary 7.62 mm Bullet |
| Received:March 31, 2021 Revised:April 11, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.05.012 |
| KeyWord:7.62 mm ordinary bullet gun-shot test 06Cr19Ni10 steel 30CrMoA steel ductile hole enlargement plug ballistic limit velocity |
| Author | Institution |
| HE Li-ling |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang , China |
| ZHONG Wei-zhou |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang , China |
| LYU Ming |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| ZHANG Fang-ju |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| YUE Xiao-hong |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| WEI Fa-yuan |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| HUANG Hai-ying |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
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| Abstract: |
| The thin metallic plate is ordinarily used as rapped structure. The paper aims to evaluate the anti-penetration performance of the thin metallic plate against high-speed bullet, in order to evaluate the anti-penetration performance of the complex structure rapped by thin steel plate. The 7.62 mm bullet is adopted to evaluated the anti-penetration performance of thin metalllic plate, which is used by 56-type rifle manual firing method. Single steel plate, 4 mm and 8 mm 06Cr19Ni10 plate and 8 mm and 16 mm 30CrMoA plate are respectively shot by the bullet. Double steel plates, 06Cr19Ni10 and 30CrMoA plates with thickness combination as 4 mm+8 mm and 8 mm+8 mm are also studied. The striking and residual velocities of bullet is measured in the test, and the fracture mode of the target is analyzed. The ballistic limit velocity of perforated plate is theoretically obtained. It is indicated that the 7.62 mm ordinary bullet can not perforate the single steel plate made of 30CrMoA steel with thickness 16mm. It can not perforate all double steel plates tested in the present paper. Other single steel plates tested are perforated by the bullet. Based on the Recht-Ipson model, 4 mm and 8 mm 06Cr19Ni10 and 8 mm 30CrMoA steel plate has ballistic limit velocity 511.7 m/s, 498.6 m/s and 684.3 m/s, respectively. With the increase of thickness, the failure mode of plate transforms from ductile hole-enlargement into plugging, and both are ductile failure modes. The high-strength backing plate can enhance the anti-penetration performance of the front plate. |
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