Johnson-Holmquist constitutive model for brittle materials, coupled with a crack softening model, is used to describe the deviatoric and tensile crack propagation beneath impact crater in granite. Model constants are determined either directly from static uniaxial strain loading experiments, or indirectly from numerical adjustment. Constants are put into AUTODYN-2D from Century Dynamics to simu...

Modeling of the asymmetrical material flow in the specimen during a Hopkinson bar compression test is proposed, based on comparative results between numerical simulation using AUTODYN-2D and experimental tests applied to metals with different phase structures (copper, aluminum, iron and titanium). Among three main material flow regions, only one could be considered as valid for a material inves...

Abstract The AUTODYN-2D simulation software was used to study the jet formation of single-cone and biconical shaped charge liner damage influence on RHA target. numerical results show that compared with typical structure, head formed by is faster has better penetration performance On this basis, standoff, cone angle line thickness characteristics target under studied. when standoff increases fr...

Abstract In order to discuss the effect of different outer liner material on performance double cylinder-cone shaped charge, nonlinear dynamics software Autodyn-2D was used carry out numerical simulation, and jet shape penetration steel target were analysed when copper, nickel, tungsten, tantalum as materials copper inner cover material. The result shows that head is formed by cylindrical part ...

Abstract The shaped charge with reactive material composite liner could not only meet the requirement of after-effect damage behavior, but also achieve a deeper penetration capability. Based on platform AUTODYN-2D code, jet formation characteristics material-titanium and its behavior to multi-spaced plates were studied. Numerical simulations showed that increasing detonation pressure explosive,...

Abstract In order to study the influence of different spherical fragments on penetration depth concrete targets, AUTODYN-2D software is used model and simulate with diameters, materials velocities. Through analysis data, it found that tungsten alloy will not continue increase at higher speeds (when v > 1400 m / s, begins decrease). The process fragment penetrating analyzed, relationship betw...

This article presents the experiments on ballistic effect of plates formed by stacked Twaron® fabrics between 10 and 16 layer numbers impregnated with epoxy resin vacuum infusion method results Autodyn-2D® simulations using an axisymmetric model. The impact resistance panels produced was determined according to NIJ-STD-0108.01 standard. All were tested against 9 mm FMJ bullets at average veloci...