Impact Dynamics

Zukas, J. A.; Nicholas, T.; Swift, H. F.; Greszczuk, L. B.; Curran, D. R.; Malvern, L. E.

doi:10.1115/1.3167125

Cited by 160 publications

(173 citation statements)

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“…A very similar approach for the ballistic limit determination was also previously reported in Ref. [13]. The projectile nose flattens around the ballistic limit ( Table 2, F and Figs.…”

Section: Resultsmentioning

confidence: 50%

Experimental investigations on the ballistic impact performances of cold rolled sheet metals

et al. 2011

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a b s t r a c tThis study focuses on the ballistic performances of 1 and 2 mm-thick and 2 Â 1 mm-thick cold rolled sheet metal plates against 9 mm standard NATO projectile. The velocity of the projectile before and after perforation, the diameter of the front face deformation, the depth of the crater and the diameter of the hole were measured. The fracture surfaces of the plates near the ballistic limit were also microscopically analyzed. The highest ballistic limit was found in 2 mm-thick plate (332 m s À1 ) and the lowest in 1 mmthick plate (97 m s À1 ). While, the ballistic limit of 2 Â 1 mm-thick plate decreased to 306 m s À1 . Typical failure mechanism of the projectile was the flattening and mushrooming at relatively low velocities and the separation from the jacket at relatively high velocities. In accord with the ballistic limits, 2 mm-thick target plate exhibited the highest hardness value. Microscopic investigations showed the significant reductions in the grain size of the targets after the test.

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“…A very similar approach for the ballistic limit determination was also previously reported in Ref. [13]. The projectile nose flattens around the ballistic limit ( Table 2, F and Figs.…”

Section: Resultsmentioning

confidence: 50%

Experimental investigations on the ballistic impact performances of cold rolled sheet metals

et al. 2011

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“…From each simulation using the models presented above, initial ( i v ) and residual ( [28], also known as the Lambert-Jonas equation [29], was used to determine the trend-lines through the data points as…”

Section: Numerical Resultsmentioning

confidence: 99%

A nano-scale material model applied in finite element analysis of aluminium plates under impact loading

Johnsen

Holmen

Myhr

et al. 2013

Computational Materials Science

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Finite element simulations of AA6070 aluminium plates struck by ogival-nose projectiles are performed. The aluminium plates are 20 mm thick and heat treated to temper O, T4, T6 and T7. A nano-scale material model, consisting of three parts: a precipitation model, a yield-strength model and a work-hardening model, is used to predict the flow-stress curves of the materials at ambient temperature based on the chemical composition of the alloy and the thermal history defined by the heat treatment. Finite element simulations of the perforation process are then carried out using both 3D solid and 2D axisymmetric elements. The numerically-obtained ballistic limit velocities, predicted without any use of data from mechanical tests, are compared with available experimental data and found to be in excellent agreement with the experimental ones for all tempers. The same holds for the predicted residual velocities at striking velocities higher than the ballistic limit.

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“…Tensile tests on dog-bone specimens from the base material with clamped ends were performed to determine the quasi-static behaviour of the material while the dynamic material behaviour may be found in the literature [6,7]. The tests were performed in a Zwick/Roell Z030 testing machine at a constant deformation rate of 2.1 mm/min.…”

Section: Materials Testsmentioning

confidence: 99%

Behaviour of plated structures subjected to blast loading

Aune

Langseth

2015

EPJ Web of Conferences

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Abstract. An experimental investigation using a new shock tube facility to study blast-load effects on thin aluminium plates is presented. The shock tube is designed to expose materials and structures to extreme loading conditions, such as accidental explosions or terrorist attacks. The intensity of the loading in the present study was determined by the initial conditions of the compressed gas, i.e. volume and pressure, and the resulting loading on the target plate was compared to experimental data from explosive detonations found in the literature. The square plates were manufactured from a low-strength aluminium alloy and had an exposed area of 0.3 × 0.3 m 2 . Piezoelectric pressure sensors were used for pressure recordings and synchronized with two high-speed cameras operating at a frame rate of 21,000 fps in a stereoscopic setup to capture the dynamic response using a threedimensional digital image correlation (3D-DIC) technique. The experiment showed that the shock tube is capable of recreating a loading similar to that of an unconfined far-field airblast, and worked as an easily controllable alternative to explosive detonations when studying the dynamic response of structures subjected to blast loading.

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Impact Dynamics

Cited by 160 publications

References 0 publications

Experimental investigations on the ballistic impact performances of cold rolled sheet metals

Experimental investigations on the ballistic impact performances of cold rolled sheet metals

A nano-scale material model applied in finite element analysis of aluminium plates under impact loading

Behaviour of plated structures subjected to blast loading

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