Experiment And Numerical Simulation Of Anti-Penetration Effect To Long-Rod Projectiles Of Steel Fiber Reinforced Concrete Targets Within The A97-Ceramic-Plate Or The Armor Plate

By utilizing the numerical simulation combined with the experiment, the anti-penetration characteristics of steel fiber reinforced concrete (SFRC) targets within the A97-ceramic-plate or the armor plate are studied.Five kinds of targets have been experimentally studied with long-rod projectiles; the experimental results indicate: when A97-ceramic-plate and the armor plate have been put in the targets of steel fiber reinforced concrete, the effects of resisting the long-rod projectile appear. In this experiment, A97-ceramic-plate excels the armor plate in the anti-penetration performance; For the penetration depth of the unit energy for long-rod projectile, the average depth penetration into the A97-ceramic-plate of the unit energy is less nearly 14% than that of the armor plate. The anti-penetration performance of all kinds of targets from strong to infirm is that the targets with the 30mm-thickness of the A97-ceramic-plate greater than the targets with the 15mm-thickness of the A97-ceramic-plate, and that greater than the targets with the 4.5mm-thickness of the armor plate, and that greater than the targets with the 2.5mm-thickness of the armor plate, and that greater than the targets of steel fiber reinforced concrete. When the armor plate is compared with the tightly arrayed corundum spheres, and penetrated by the same long-rod projectile, we find that the anti-penetration performance of corundum spheres is better than that of the armor plate when the unit area mass is uniform, the penetration depth of the unit energy for long-rod projectiles reduced by 8.73% for average. In the experiment, there are eleven long-rod projectiles have been broken when shot to the A97-ceramic-plate, this is very singular in the experiments before, and we analyzes the phenomena.The processes of long-rod projectile penetrating into the targets have been simulated with the dynamic finite element analysis software named LS-DYNA. The results indicate: the parameter and the material model being selected are reasonable. The results of simulation and experiment for the armor plate are consistent, the A97-ceramic-plate is same.The results of the two methods are almost identical, they can give us a guide for design the protective structures. We can say it is an effective defense when the steel fiber reinforced concrete among with A97-ceramic-plank or the armor plate.