Simulation Of A Ballistic Impact Of A Deformable
Bullet Upon A Multilayer Fabric Package
Author(s)
R. Barauskas, A. Abraitiene & A. Vilkauskas
Abstract
A finite element model of the shooting test against the paraaramyde Twaron
multi-layer textiles package structure has been developed in LSDYNA. The
bullet has been considered a deformable body in contact with the fabric package
presented by interwoven yarn structure. The simplification of the model has been
achieved by presenting the multifilament yarns by thin shell elements, the
thickness of which represents the real thickness of yarns as it can be measured in
the weave. The zones of the fabric remote from the point of impact have been
presented as a roughly meshed uniform thin shell model. The junction between
the two types of zones of the fabric has been performed by means of the tie
constraint and by proper adjustment of material parameters ensuring the same
speeds of the wave propagation in the interwoven yarn structure and in the
uniform shell. Physical and numerical experiments have been performed in order
to identify the material model parameters.
Keywords: high-velocity impact, multi-layer fabric, finite elements, LSDYNA.
1 Introduction
The clothes ensuring the ballistic protection have to be designed in a way that
their ballistic strength exceeds many times the rates intended in regulating
standards and ensures the necessary protection level. For the estimation of the
ballistic safety the worldwide spread USA standard NIJ 01.01.03 is employed.
The results obtained during the investigation of multi-layer textile packages
designated for bullet-resistant vests at the Lithuanian textile institute [1] imply
that the protection level is defined by the following basic factors:
Keywords
high-velocity impact, multi-layer fabric, finite elements, LSDYNA.
Related Book
Other papers in this volume
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