Prof. habil. dr. Rimantas Barauskas
Kauno Technologijos Universitetas, Informatikos fak.
Taikomosios informatikos katedra

Finite element analysis of ballistic properties of a multilayer textile package in LSDYNA
Aušra Abraitienė, Lina Valasevičiūtė, Rimantas Barauskas, Andrius Vilkauskas.

A finite element model for paraaramyde Twaron multilayer fabrics package structure has been developed in order to simulate the shooting-through test and to clarify the process taking place during the mechanical contact interaction between the package and bullet. The simplification of the model has been obtained by means of “mezzo-mechanical” approach which avoids the direct modeling of filaments that comprise a yarn. Instead, yarns have been modeled by using thin shell elements the thickness of which represents the real thickness of yarns which can be measured in the weave. Bending stiffness has been eliminated by selecting a single integration point over the shell height because in reality it is expected to be very small due to the multi-filament structure of a yarn. The interaction model consists of a small sheet of a woven structure that comes into mechanical contact with an elastic-plastic model of a bulled moving with high velocity. Basing on the data obtained during uniaxial 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. Keywords: multilayer package, finite elements, explicit modeling, LSDYNA.
PublikacijaMedžiagotyra, 2002, Vol. 8, no. 4, p. 500-505
Duomenų bazėVINITI; METADEX; CSA/ASCE Civil Engineering Abstracts; Mechanical & Transportation Engineering Abstracts; INSPEC
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