Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (11): 56-63.doi: 10.13475/j.fzxb.20200905009

• Textile Engineering • Previous Articles     Next Articles

Ballistic impact tests and numerical simulation of aramid fabric and containment ring

MOU Haolei1,2, XIE Jiang2, PEI Hui2, FENG Zhenyu2, GENG Hongzhang1()   

  1. 1. School of Material Science and Engineering, Tiangong University, Tianjin 300387, China
    2. College of Safety Science and Engineering, Civil Aviation University of China, Tianjin 300300, China
  • Received:2020-09-21 Revised:2021-07-22 Online:2021-11-15 Published:2021-11-29
  • Contact: GENG Hongzhang E-mail:genghz@tiangong.edu.cn

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Abstract:

To investigate the ballistic impact response characteristics of aramid fabric and its containment ring, the mechanical properties of the aramid fabric were obtained by conducting the quasi-static and dynamic tensile tests, and the impact performance of the aramid fabric plate and its containment ring were determined by conducting the ballistic impact tests. The numerical multi-layer shell models were built and verified using the test results. The research results show that the strain rate has a significant effect on the mechanical properties of the aramid fabric.For the fabric ballistic impact tests, the energy absorption of the aramid fabric is related to the failure mode, and there are obvious boundary effects. For the ballistic impact tests on the containment ring, the energy is dissipated mainly through the yarn strain energy, the yarn breakage and the interaction between yarns. At the same incident velocities, the smaller is the number of layers, the less energy is absorbed. When the number of fabric layers increases, the more energy is absorbed, but the increment of energy absorption decreases. The multi-layer shell models can well reproduce the ballistic impact process, and the simulated failure morphology, the residual velocity of projectile, and the absorbed energy percent difference are close to the test results, which can effectively verify the multi-layer shell models.

Key words: aramid fabric, containment ring, ballistic impact, failure mode, response characteristic, numerical simulation

CLC Number: 

  • V231.91

Fig.1

Typical quasi-static tensile process"

Fig.2

Quasi-static tensile stress-strain curves. (a) Warp direction; (b) Weft direction"

Fig.3

Dynamic tensile stress-strain curves"

Tab.1

Ballistic impact test results"

实验
编号		 弹体
质量/g		 层数 入射速度/
(m·s-1)		 剩余速度/
(m·s-1)		 ΔE/% V50/
(m·s-1)		 结果
1# 175.9 2 137.4 130.40 9.93 43.3 穿透
2# 175.9 4 129.8 106.00 33.30 74.9 穿透
3# 175.6 6 133.8 85.80 58.90 102.6 穿透
4# 175.9 8 131.8 0 100.00 — 未穿透
5# 176.0 6 103.0 0 100.00 — 未穿透
6# 175.5 6 122.0 22.27 96.70 119.9 穿透
7# 174.3 6 152.4 103.80 53.60 111.6 穿透

Fig.4

Ballistic impact process of 6#. (a) Lengthening; (b) Penetration; (c) After impact"

Fig.5

Winding machine and containment ring. (a) Winding machine; (b) Containment ring; (c) Schematic diagram"

Tab.2

Ballistic impact test results of containment ring"

实验
编号		 弹体
质量/g		 层数 入射速度/
(m·s-1)		 剩余速度/
(m·s-1)		 ΔE/% V50/
(m·s-1)		 结果
1* 175.4 2 140.0 115.0 32.5 79.8 穿透
2* 175.4 4 140.4 84.5 63.8 111.6 穿透
3* 175.6 6 141.4 42.7 90.9 134.8 穿透
4* 175.7 8 140.8 0 100.0 — 未穿透
5* 175.4 6 119.3 0 100.0 — 未穿透
6* 175.9 6 131.1 22.1 97.2 129.2 穿透
7* 175.7 6 146.2 66.9 78.8 130.0 穿透

Fig.6

Impact process of test"

Fig.7

Fabric deformation and damage"

Fig.8

Analysis of energy absorption. (a) Different fabric layers; (b) Incident velocities and residual velocities; (c) Different kinetic energy"

Fig.9

Finite element model of containment ring"

Fig.10

Simulation of non-contained process (a) and contained process (b)"

Fig.11

Comparison of damage morphology"

Fig.12

Fabric energy absorption-time curve"

Tab.3

Comparison of ballistic impact simulation and test results of fabrics"

实验
编号		 层数 入射速度/
(m·s-1)		 剩余速度/(m·s-1) 吸能比率/%
实验 仿真 实验 仿真 差值
1* 2 137.4 130.40 121.0 9.93 22.4 -12.47
2* 4 129.8 106.00 112.0 33.30 25.5 7.80
3* 6 133.8 85.80 71.6 58.90 71.4 -12.50
4* 8 131.8 0 0 100.00 100.0 0
5* 6 122.0 22.27 60.9 96.70 75.0 21.70
6* 6 152.4 103.80 98.5 53.60 58.2 -4.60

Fig.13

Simulation results of 3*"

Fig.14

Projectile velocity-time curve of 3*"

Fig.15

Simulation results of 4*"

Fig.16

Simulation projective velocity-time curve of 4*"

Tab.4

Comparison of impact simulation and test results of aramid fabric containment ring"

实验
编号		 入射速度/
(m·s-1)		 剩余速度/(m·s-1) 吸能比率/%
实验 仿真 实验 仿真 差值
1* 140.0 115.0 110.2 32.5 38.4 -5.9
2* 140.4 84.5 88.2 63.8 60.5 3.3
3* 141.4 42.7 43.4 90.8 90.6 0.2
4* 140.8 0 -21.6 100.0 97.6 2.4
5* 119.3 0 0 100.0 100.0 0
6* 131.1 22.1 20.3 97.2 97.6 -0.4
7* 146.2 66.9 70.9 79.1 76.5 2.6
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