Numerical Analysis of Inter-Yarn Friction Effects on the Single-Layer High-Strength Woven Fabrics under High-Velocity Impact

Document Type : Research Article

Authors

1 Depatment of Mechanical Engineering, University of Zanjan, Zanjan, Iran

2 Department of Mechanical Engineering, University of Zanjan

Abstract

It is known that friction has a significant effect on the determination of the ballistic impact performance of woven fabrics. In this paper, the ballistic behavior of fabrics woven from Twaron and Dyneema aramid fibers against the high-velocity impact of a cylindrical projectile is investigated. This paper aims to numerically figure out the effects of inter-yarn friction performance including transverse deformation of fabrics, overall energy absorption and the forms of energy absorption. The numerical results show that increasing inter-yarn friction decreases the transverse deflection abilities of the fabrics and subsequently the response modes of them will transfer from a localized response to a globalized one. With the increase of inter-yarn friction, the energy absorption rate monotonously increases, while the failure time firstly decreases and then increases but further decreases again. Increasing inter-yarn friction also affects the forms of energy absorption. Near zero friction coefficients, strain energy is the dominant failure mechanism of a fabric. With the increase of inter-yarn friction, kinetic energy becomes the dominant failure mechanism. The frictional dissipation energy absorption is maximized for finite inter-yarn friction. Experimental results were used to validate the results. The predicted values of the model show a good agreement with the experimental data. The correlation coefficient was 0.9426, which verified the accuracy of the simulation.

Keywords

Main Subjects


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