Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (11): 59-65.doi: 10.13475/j.fzxb.20200101408

• Textile Engineering • Previous Articles     Next Articles

Influence of layer spacing on ballistic performance of double-plied plain fabric target

ZHOU Yi1,2, LI Hang1, YAN Xiangbang1, LIANG Yaoting1, ZHANG Zhongwei2()   

  1. 1. Key Laboratory of Textile Fiber & Product, Ministry of Education, Wuhan Textile University,Wuhan, Hubei 430200, China
    2. State Key Laboratory of Explosion & Impact and Disaster Prevention & Mitigation, The Army Engineering University of PLA, Nanjing, Jiangsu 210007, China
  • Received:2020-01-09 Revised:2020-06-05 Online:2020-11-15 Published:2020-11-26
  • Contact: ZHANG Zhongwei E-mail:zhangzhongwei.cn@gmail.com

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Abstract:

In order to meet the requirements of performance improvement and weight reduction of flexible ballistic panels, and to optimize the structure design of flexible multi-ply ballistic materials, spacing was incorporated between the adjacent layers to study the dynamic response of the front and back layers. This research used ballistic penetration test to characterize the energy absorption capacity of fabric panels, and also made use of a finite element model to analyze the mechanisms of energy absorption. It was found from the ballistic tests that the energy absorption of the target decreases and then increases as the layer spacing widens. When a critical value is reached, the energy absorption stops increasing. The numerical predictions obtained from finite element modeling share similar trend with the experimental results. It was found that the transverse deflection and the stress distribution area of the front layer increase as the layer spacing becomes widened, whereas the magnitude of stress distribution decreases on the rear layer.

Key words: flexible body armor, ballistic material, layer spacing, anti-penetration performance, ballistic penetration

CLC Number: 

  • TS131

Fig.1

Ballistic apparatus"

Fig.2

Projectile (a) and clamp (b)"

Fig.3

Finite element model for yarn, plain weave and projectile. (a)Yarn model; (b) Model of projectile colliding a plain weave"

Fig.4

Impact-residual velocity curves of experimental and finite element models for single and doule layer structures"

Fig.5

Energy absorption as a function of layer spacing for sample targets"

Fig.6

Post-impacted aramid plain weaves. (a) Sample with filament damage; (b) Sample with filament lateral displacement"

Fig.7

Transverse deflections(a)and contour plots of stress distribution(b)for back layer"

Fig.8

Transverse deflections(a)and contour plots of stress distribution(b)for front layer"

Fig.9

Energy absorption as a function of time"

Fig.10

Change of time with strain and kinetic energy for front layer. (a)Strain energy;(b)Kinetic energy"

Fig.11

Change of time with strain and kinetic energy for back layer. (a)Strain energy;(b)Kinetic energy"

Fig.12

Schematic diagram of projectile colliding target"

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