Finite element modelling effects of inter-yarn friction on the single-layer high-performance fabrics subject to ballistic impact

Chu, Ying; Chen, Xiaogang

doi:10.1016/j.mechmat.2018.08.003

Cited by 30 publications

(8 citation statements)

References 32 publications

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“…The theoretical fabric behavior is usually investigated using finite element modeling based on the geometry of textile structures. The geometry of fabric structures could be obtained by parametric modeling of the real geometry (Chu and Chen, 2018;Wu and Li, 2019) or by computed X-ray tomography observation (Naouar et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Inverse approach for flax yarns mechanical properties identification from statistical mechanical characterization of the fabric

Abida

Baklouti

Gehring

et al. 2020

Mechanics of Materials

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Plant fiber properties, such as morphological and mechanical, are characterized by a large dispersion. Thereby, a statistical analysis is needed to obtain consistent results. An experimental study, conducted on 50 flax yarns, shows that the flax yarn properties (Young's modulus, tensile strength and diameter) follow Gaussian distributions. This approach is obviously reliable, however time-consuming, to get relevant information. An alternative could be the identification of the yarn mechanical properties using an inverse approach, based on tensile tests conducted on flax fabric reinforcement. The aim of this study is to develop a numerical method that allows to identify the statistical distributions of flax yarn properties based on tensile tests conducted on fabric specimens. The proposed strategy relies on two assumptions. On the one hand, fabric is constituted of several yarns acting like springs in parallel. On the other hand, yarns are considered as brittle-elastic materials. Hence, a yarn breaks when the load reaches its failure strength, leading to a loading redistribution to the intact yarns. A comparison of the numerical and experimental results of flax fabric tensile behavior, and of the flax property statistical distributions allows to confirm the performance of this strategy. The results show that the flax fabric tensile behavior is correctly described by the proposed modeling strategy. The average and the standard deviation of the Young's modulus, the tensile strength and the diameter of flax yarns identified from fabric tensile tests via inverse approach are close to those obtained experimentally on individual yarns. Indeed, the measured average diameter of unitary yarns are 244.4 ± 19.2 μm and the fitted one is 2474.8 ± 17.4 μm, the fitting failure strength 292.3 ± 33.4 MPa are close to the experimental 271.2 ± 47.5 MPa. The identified Young's modulus is 9.4 ± 0.9 GPa is lower than the experimental 10.8 ± 1.3 GPa.

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Section: Introductionmentioning

confidence: 99%

Inverse approach for flax yarns mechanical properties identification from statistical mechanical characterization of the fabric

Abida

Baklouti

Gehring

et al. 2020

Mechanics of Materials

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“…While the PD contributes more in both 2D fabric panels. According to Chu et al [28], the primary yarns that in direct contact with the projectile tends to fail by plastic fracture damage, while the secondary yarns interlaced with the primary yarns participate in energy absorption by tensile failure during the penetration process. The fact that SE contributes more in 3D fabric indicates that there are more secondary yarns involved in energy absorption of the fabric, which leads to a wider fabric deflection and an improved energy absorption capability.…”

Section: Energy Absorptionmentioning

confidence: 99%

Numerical Study on the Effect of Z-Warps on the Ballistic Responses of Para-Aramid 3D Angle-Interlock Fabrics

et al. 2021

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In order to achieve an efficient ballistic protection at a low weight, it is necessary to deeply explore the energy absorption mechanisms of ballistic fabric structures. In this paper, finite element (FE) yarn-level models of the designed three-dimensional (3D) angle-interlock (AI) woven fabrics and the laminated two-dimensional (2D) plain fabrics are established. The ballistic impact responses of fabric panels with and without the interlocking Z-warp yarns during the projectile penetration are evaluated in terms of their energy absorption, deformation, and stress distribution. The Z-warps in the 3D fabrics bind different layers of wefts together and provide the panel with structural support along through-the-thickness direction. The results show that the specific energy absorption (SEA) of 3D fabrics is up to 88.1% higher than that of the 2D fabrics. The 3D fabrics has a wider range of in-plane stress dispersion, which demonstrates its structural advantages in dispersing impact stress and getting more secondary yarns involved in energy absorption. However, there is a serious local stress concentration in 2D plain woven fabrics near the impact location. The absence of Z-warps between the layers of 2D laminated fabrics leads to a premature layer by layer failure. The findings are indicative for the future design of ballistic amors.

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“…Numerical simulations and finite element analysis have revealed that the greater the friction between yarns, the higher the energy consumption under an impact. − Wang et al asserted that projectiles took a longer time to penetrate fabrics with larger inter-yarn friction. Moreover, yarn-to-yarn friction plays an important role in the stress distribution of primary and secondary yarns .…”

Section: Introductionmentioning

confidence: 99%

Polyacrylate and Carboxylic Multi-Walled Carbon Nanotube-Strengthened Aramid Fabrics as Flexible Puncture-Resistant Composites for Anti-Stabbing Applications

Cai

Zhang

2023

ACS Appl. Nano Mater.

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Lightweight and soft puncture-resistant fabrics have great applications in professional clothing. A soft composite fabric was fabricated by coating a water-soluble polyacrylate emulsion (PAE) on the surface of aramid fabric (AF; AF/PAE). The areal weight of AF/PAE fabric was only 7.1% higher than that of AF ones. Under spike stabbing, both the maximum load and energy absorption capacity of AF/PAE were about 4.5 times higher than those of AF. The puncture resistance of AF/PAE was superior to those of shear thickening fluid (STF)-impregnated AF (AF/STF) and polyurethane (PU)-sprayed AF (AF/PU) under the same areal weight or thickness. Carboxylic multi-walled carbon nanotubes (MWCNTs-COOH; 0.4 wt %) were then added to AF/PAE to further enhance the puncture resistance of the composite fabric. The spike punching resistance of AF/PAE increased by about 49.2% after the addition of MWCNTs-COOH. MWCNTs-COOH created a bridge effect between fibers to enhance friction between yarns. In addition, MWCNTs-COOH on the fiber surface can form a network protective membrane, which can effectively disperse stress and reduce fiber fibrillation, thus improving the puncture resistance of the fabric. This study provides an efficient method for the development of lightweight and flexible anti-stabbing equipment.

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Finite element modelling effects of inter-yarn friction on the single-layer high-performance fabrics subject to ballistic impact

Cited by 30 publications

References 32 publications

Inverse approach for flax yarns mechanical properties identification from statistical mechanical characterization of the fabric

Inverse approach for flax yarns mechanical properties identification from statistical mechanical characterization of the fabric

Numerical Study on the Effect of Z-Warps on the Ballistic Responses of Para-Aramid 3D Angle-Interlock Fabrics

Polyacrylate and Carboxylic Multi-Walled Carbon Nanotube-Strengthened Aramid Fabrics as Flexible Puncture-Resistant Composites for Anti-Stabbing Applications

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