Development of computer models of modified aramid fabric

The article is devoted to the development of models of modified aramid fabrics (aramid fabrics with surface treatment) using numerical methods that are used in armored elements. Minimizing the mass of armored elements or body armor, reducing the amount of deflection of the back side of the armored panel (reducing the level of trauma to the human body) are actual tasks of today. Most of the energy of a bullet is dissipated due to the work of friction forces when pulling the threads from aramid fabrics in a body armor. Surface treatment of fabrics allows to increase the frictional interaction of the threads and to reduce the deflection of fabric barriers during a local impact. Surface treatment adds little weight to the fabric. The software for creating a mesh of finite elements of fabrics with surface treatment is developed, designed and implemented, and tested. The software allows you to create numerical models of modified aramid fabrics with a continuous and partial surface treatment (stripes along the X and Y axes in the plane of the fabric). Aramid fabric P110 with the surface treatment of PVA is considered in the work. The model of fabric with a continuous surface treatment is developed. The surface treatment was built with shell elements that connected the warp and weft threads from the outside. Supercomputer modeling of impact loading of modified aramid fabric located on technical plasticine in the LS-DYNA software package was carried out. The comparison of the obtained data to the experimental data was carried out, the speed-up graph was obtained.