Ballistic behavior of steel sheet subjected to impact and perforation

Abstract

The paper is reporting some comparisons between experimental and numerical results in terms of failure mode, failure time and ballistic properties of mild steel sheet. Several projectile shapes have been considered to take into account the stress triaxiality effect on the failure mode during impact, penetration and perforation. The initial and residual velocities as well as the failure time have been measured during the tests to estimate more physical quantities. It has to be noticed that the failure time was defined using a High Speed Camera (HSC). Thanks to it, the impact forces (average and maximum level), were analyzed using numerical simulations together with an analytical description coupled to experimental observations. The key point of the model is the consideration of a shape function to define the pulse loading during perforation.

Experimental and numerical analysis of the aluminum alloy AW5005 behavior subjected to tension and perforation under dynamic loading

“…They are presented in Table 2. The tensile test values are obtained from experiments, whereas the perforation test values are obtained using a numerical analysis and available literature data for similar materials (Jankowiak et al, , 2014Kpenyigba et al, 2013). The strain rates for perforation testsε = 1000 s −1 andε = 10000 s −1 correspond to initial impact velocities V 0 of 120 m/s and 180 m/s, respectively.…”

Experimental and Numerical Study of Brass Specimens Subjected to High Rates of Loading During Perforation Tests and Heated Using High-Performance Thermal Chamber

“…Therefore, the projectile is assumed as rigid during the process of perforation. The residual velocity of the projectile can be estimated using the following equation proposed by Ipson and Recht [2,3], knowing the parameter κ:…”

Experimental Damage Evaluation of Honeycomb Sandwich with Composite Face Sheets under Impact Load

“…Sibeaud et al [16] experimentally tested the honeycomb using a two-stage light gas gun at hypervelocity normal and oblique impact ranging from 2 to 10 km/s. Jankowiak et al [17] studied the changes in failure mode for different projectile shape due to stress triaxiality state. Xie et al [18] implemented the interlaminar damage models and crushable foam model to simulate the lowvelocity impact event of a foam core sandwich panel.…”