Abstract
A modified digital element approach (DEA) is applied to simulate fabric perforation process under ballistic impact. The previous version of the DEA is capable of simulating ballistic impact of textile fabric using rigid body spherical and cylindrical projectiles only. Fragment simulating projectile (FSP) and real bullets are not modeled. The subject of this research is to perform ballistic penetration process against projectile of arbitrary shape and validate the modified DEA. A fabric to solid body projectile contact search and contact force calculation algorithm is established. Ballistic impact of textile fabrics against spherical and cylindrical projectiles is performed using the previous DEA and the modified DEA separately. Numerical results are compared to the well published DEA results to investigate the fabric bullet resistant performance.
Highlights
The strength of textile fabrics under projectile impact is of high importance to soldier protection applications
A near fiber-level digital element approach (DEA) for simulating impact and penetration of textiles against rigid spherical and cylinderical projectile is established by Wang and Miao[5] in 2010
Following conclusions are reached based on the above two sets of simulation: 1. Simulation results of the modified DEA approach using spherical and cylindrical projectiles closely resemble the results of the previous DEA
Summary
The strength of textile fabrics under projectile impact is of high importance to soldier protection applications. A near fiber-level digital element approach (DEA) for simulating impact and penetration of textiles against rigid spherical and cylinderical projectile is established by Wang and Miao[5] in 2010. In this micro-approach, each yarn is discretized into several equal length digital fibers. In 2016, Wang and Miao[9] implemented a Monte Carlo process to assign a unique strength to each element following a bimodal Weibull distribution function to investigate the effect of inter-fiber friction coefficient on fabric ballistic performance. First, the DEA is modified to simulate ballistic impact of textile fabric against solid body projectiles of arbitrary shape.
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