INFLUENCE OF THE NOSE SHAPE OF PROJECTILE ON THE LOCAL DAMAGE OF CONCRETE PLATES BY HIGH-VELOCITY IMPACT

摘要

This study presents the influence of the nose shape of projectile on the local damage of concrete plates subjected to high-velocity impact. First, the projectile launching apparatus by high-pressurized air was developed. This apparatus can launch projectiles with the mass of 100g to 1000g. Then, impact tests for concrete plates were carried out. After that, a numerical model which can describe the local damage of concrete plates was investigated by using general purpose hydrocode AUTODYN in terms of a constitutive model and strain rate effect. Finally, the influence of the nose shape of projectile on the local damage of concrete plates was discussed by numerical simulation.