Simulation analysis on law of penetration of long-rod projectiles with high speed into concrete

Using the AUTODYN-2D software, penetrations of long-rod projectiles into semi-infinite concrete target at an impact speed of 0.6~2 km/s were simulated, in which materials, masses and length-to-diameter ratios of projectiles are different. The effects of impact speed on penetration depth and hole diameter were analyzed. The results show that hole diameter increases with the impact speed. There is a noticeable inflection point of penetration depth. The effect of material, mass and length-to-diameter ratio on inflection point of penetration depth was further studied. The material has a huge impact on inflection point of penetration depth, while mass and length-to-diameter ratio have a little impact on inflection point of penetration depth.