Modeling of a bullet interaction against the multilayer textile package in LSDYNA
Grįžti į sąrašą
A finite element model of the shooting test against the paraaramyde Twaron multi-layer textiles package structure has been developed in LSDYNA in order to simulate the physical processes taking place during the high-velocity mechanical contact interaction between the package and the bullet. The simplification of the model has been achieved by means of ?mezzo-mechanical? approach which avoids the direct modeling of filaments that comprise a yarn of a woven textile layer of the package. Instead, yarns have been modeled by using thin shell elements the thickness of which represents the real thickness of yarns as it can be measured in the weave. Basing on the data obtained during uni-axial tension experiments, the Twaron material is assumed to be elastic up to its failure limit. The influence of different boundary conditions, number of layers in a package and inter-layer friction has been examined. The simulation has been performed by means of the LSDYNA software. Special attention has been devoted to the validation of the model. A series of real and numerical experiments has been made in order to identify the material model parameters: shooting the lead bullet against the lead plate, shooting full metal jacket bullet against a lead plate and shooting a bullet against a multi-layer textile package.
|Leidėjas||University of Patras|
|Publikacija||1st IC-SCCE [elektroninis išteklius] : 1st International Conference "From Scientific Computing to Computational Engineering, Athens, Greece, 8-10 September, 2004, 2004, p. [1-8]|