TITLE:
Numerical Analysis of the Ballistic Impact Behavior of 2D Woven Fabrics
AUTHORS:
Octavian Jitarașu, Bianca Cășeriu
KEYWORDS:
2D Woven Fabric, Pyramidal Deformation, Boundary Condition, Clamped Edge, Yarn Pullout, Yarn Slippage, Residual Velocity, Kevlar, UHMWPE
JOURNAL NAME:
Open Access Library Journal,
Vol.11 No.9,
September
29,
2024
ABSTRACT: Numerical simulations of the impact behavior of a single layer of 2D woven fabrics at low-velocity are presented. The configurations considered for the studies are three different architectures of 2D woven fabrics (plain weave, twill weave and satin weave) made of Kevlar and UHMWPE fibers. The numerical models are formulated and used to investigate the ballistic impact behavior of 2D woven fabrics when the fabrics are clamped along all four edges (4BC) or two edges (2BC). In this paper, the ballistic performance of 2D woven fabrics is first evaluated in terms of their structural integrity after impact, and the effect of boundary conditions by changing border constraints is investigated in numerical simulations. Subsequently, the effect of fracture behavior of primary and secondary yarns, energy absorption behavior and failure mechanism of 2D woven fabrics were discussed. It was found that the UHMWPE fabrics outperformed the Kevlar fabrics in terms of energy absorption. In addition, it was found that the fabrics with two fixed edges reduce the residual velocity of the bullet more and absorb more energy than fabrics with four fixed edges. Numerical predictions have shown that plain weaves are the most structurally stable fabrics. The ballistic performance, as well as the structural and mechanical properties of twill weaves, lie between the plain and satin weaves.