Incremental deformation and penetration analysis of deformable projectile into semi-infinite target

Abstract

In this paper, a new analytical method for projectile deformation and penetration into a semi-infinite target has been developed. This method is based on separated, successive and incremental steps. In deformation step, the target assumed rigid and the increment of projectile deformation was evaluated, whilst in penetration step, the projectile assumed rigid and the increment of penetration was evaluated. These sequential steps continued untill the projectile stopped.Furthermore, a series of ballistic tests have been carried out with ogival projectiles with striking velocity of 600-900 m/s. The projectiles and target plates material has been chosen from 4 types of steel. In this way, 210 tests for 48 combinations of projectile, target and velocity have been carried out. Numerical simulation has been also performed using the LS-DYNA code.Comparison between the depth of penetration obtained by this analytical method and those of the experimental and numerical ones shows a good agreement.

Ballistic resistance of high hardness armor steels against 7.62mm armor piercing ammunition

“…Earlier studies on steel plates impacted by various projectiles [10][11][12][13][14][15][16][17] show that, ballistic penetration behavior can be simulated using either Lagrange or SPH. Borvik et al [12] considered ballistic penetration performance of five different steel alloys, yield strengths ranging from 600 to 1700 MPa with Lagrange discretization.…”

Reworking a Simple Model for Deformable Projectile Penetration Into Thick Targets

“…There is scope for further testing the developed computer code on the multitude of published impact cases ensuring however that the properties of used materials are specified with adequate accuracy. Programming itself could be enhanced to deal more effectively with all types of projectile head shapes, especially at lower impact velocities [23].…”

Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs

“…For example, Luk and Piekutowski (1991) produced a model which accounted for the elasto-plastic nature of the projectile, with several authors developing this approach further (Yaziv and Riegel, 1993;Roisman, Yarin et al, 2001;Rubin and Yarin, 2002). Khoda-rahmi, Fallahi et al (2006) and Zhao, Chen et al (2010) originated a different model for concrete penetration considering the effects of projectile erosion employing a step process, where the penetration depth and the erosion were calculated alternatively. However, there are not many FEA studies available for high speed deforming projectiles into concrete.…”