Numerical study on the effects of oblique impact on the ballistic behavior of 3D angle interlock woven fabric

Abstract

3D angle interlock woven fabric(3DAWF) has great potential for impact protection. This paper investigates the ballistic mechanism of 3DAWF(5 layers of angle interlock – through the thickness) under normal and oblique impact. The full-size mesoscale model of 3DAWF under different impact directions and angles was established and systematically studied to reveal the 3DAWFs’ ballistic mechanism. The numerical studies of 3DAWF subjected to 0°, 15°, 30°, 45°, and 60° oblique impacts from two impact directions along 3DAWF structure configurations were carried out. We found that 3DAWFs’ ballistic performance increases non-linearly with impact obliquity. The ballistic mechanisms change with impact directions because of 3DAWFs’ anisotropic structure. This work also demonstrates the impact damage mechanism, energy absorption evolution, and stress wave distribution of the 3DAWF under oblique high-velocity impact. The findings are constructive for the 3DAWF applicated in ballistic protection.

Effects of fabric structure on the ballistic impact response of 3D angle- interlock woven fabric targets

“…3. The choice of this projectile type aligns with widespread utilization in both experimental and numerical fabric impact studies (23), and for consistency in our simulations, we assumed the projectile to be non-deformable.…”

“…Early analytical models of impact behavior in woven fabrics were founded on linear and elastic yarn properties, disregarding signi cant factors such as friction and undulation, which are proven to hold particular relevance in 3D woven fabrics (22). Wei et al (23) demonstrated the substantial in uence of friction coe cients between yarns on the ballistic performance of 3D fabrics. Furthermore, highperformance yarns are characterized as rate-dependent materials, with their modulus, strength, and failure strain affected by loading rates (24).…”