Dissipation mechanisms and FE-modelling of penetration processes in multilayer aramid barriers of various weaving typesстатья
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Дата последнего поиска статьи во внешних источниках: 20 мая 2019 г.
Аннотация:Experimental investigation and computational estimation of the ballistic resistance properties of the multilayer fabric barriers which include layers with various weaving types carried out. Plain and four patterns of twill weave fabrics were concerned. The dynamic interaction of multilayer woven barriers with two forms of impactors is considered, and the processes of energy dissipation are investigated using the FE-modelling of impact processes. Verification of the FE-models is carried out by full-scale ballistic experiments, and the simulation error is estimated. The contribution of various mechanisms to the energy dissipation of the impactor is evaluated. The influence of the placement of layers with different weaving types in the woven barriers on the impactor velocity after the rupture is analyzed numerically. The advantages of some particular combinations of weaving types placement in comparison with the uniform barriers with the same number of layers is shown.