EXPERIMENTAL AND THEORETICAL RESEARCH OF DECELERATION HISTORY OF ELONGATED RODS IN TARGET UNDER PHYSICAL MODELLING IN THE CONDITIONS OF GEOMETRICAL SIMILARITY

摘要

Using terminal ballistics accelerometry technology, data about the projectile deceleration history was obtained for velocities higher than 1000 m/s for the cases of projectile penetration with material erosion. Technology features of piezoelectric accelerometer ASM-4 are presented. Data is used for determining dynamic mechanical properties of materials and for calibrating the numerical models of projectile interaction processes with hard targets: metals and concrete. Using similarity theory and modeling, a possibility of respective current parameters scaling of studied processes was shown in the case of geometric similarity. This possibility is validated by results of laboratory (model) and fullscale experiments for the similarity coefficient of 4.33.