Synergistic Effects of Impact and Attack Angles on Anti-Penetration Performances of Thin Aramid Laminates

JI Haibo; WANG Xin; SU Jinbo; LI Zhen; WANG Pengfei; JU Yuanyuan; LU Tianjian

doi:10.21656/1000-0887.440084

Volume 45 Issue 2

Feb. 2024

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Article Navigation > Applied Mathematics and Mechanics > 2024 > 45(2): 184-196

JI Haibo, WANG Xin, SU Jinbo, LI Zhen, WANG Pengfei, JU Yuanyuan, LU Tianjian. Synergistic Effects of Impact and Attack Angles on Anti-Penetration Performances of Thin Aramid Laminates[J]. Applied Mathematics and Mechanics, 2024, 45(2): 184-196. doi: 10.21656/1000-0887.440084

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Synergistic Effects of Impact and Attack Angles on Anti-Penetration Performances of Thin Aramid Laminates

doi: 10.21656/1000-0887.440084

JI Haibo^{1, 2
,},
WANG Xin^{3
,
,},
SU Jinbo⁴,
LI Zhen³,
WANG Pengfei³,
JU Yuanyuan⁵,
LU Tianjian^{1, 2
,
,}

1.
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China
2.
MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China
3.
Advanced Materials and Energy Center, China Academy of Aerospace Science and Innovation, Beijing 100176, P.R.China
4.
CSSC Huangpu Wenchong Shipbuilding Co., Ltd., Guangzhou 510715, P.R.China
5.
Naval Research Academy, Beijing 100161, P.R.China

Received Date: 2023-03-28
Rev Recd Date: 2023-12-29
Publish Date: 2024-02-01

Abstract

Abstract

A 3D finite element (FE) simulation model was built to investigate the synergistic effects of impact and attack angles on the penetration resistance of relatively thin aramid laminates to flat-noded bullets. Two scenarios of the impact responses of a 4-mm-thick aramid laminate were calculated, i.e., considering the impact angle alone and considering the impact and attack angles together. The penetration resistance of the aramid laminate was reflected by the residual velocity of the bullet, the ballistic limit velocity and the perforation energy threshold of the target plate. Deformation and damage mechanisms of the laminate under different impact conditions were also analyzed. The main findings are: (ⅰ) the ballistic limit velocity decreases and then increases with the initial impact angle; (ⅱ) with the increasing impact velocity and the decreasing initial impact angle, the changes of the impact angle and the attack angle both tend to decrease; (ⅲ) for a fixed impact angle, a negative attack angle is not conducive to penetration, but a positive attack angle is conducive to penetration.
- impact angle,
- attack angle,
- aramid laminate,
- flat-nosed bullet,
- ballistic limit velocity,
- perforation energy threshold

(Contributed by LU Tianjian, M. AMM Editorial Board)

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References(40)

References

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