| Abstract [eng] |
Master final degree project analyzes characteristics of materials used in the armour of military vehicles and their influence of armour systems on their exposure to projectile kinetic energy. Also this project analyzes military vehicle constructions, their armouring methods and rear ballistics is performed in this work This analyzes characteristics of small arms projectile penetration into military vehicle armour. Numerical modeling in ANSYS software is used fot the projectile penetration analysis. 3 objects are studied: 7,62 mm calibre full metal jacket projectile penetration to 4 mm thick tool steel S-7 plate, when projectile trajectory is 20°, 30°, 40° and 50°; 7,62 mm calibre full metal jacket projectile penetration to 4 mm thick aluminum 7039 alloy plate, when projectile trajectory is 50°, 60° and 70° and 7,62 mm calibre full metal jacket projectile penetration to two 2 mm thick tool steel S-7 plates, with gap of 3 mm in between, when projectile trajectory is 30° and 40°. Besides different sizes objects, them materials and projectile trajectories that are used in analyzes, objects that are analyzed are modeled in equal conditions: primary projectile speed is 715 m/s, which also rotates around it’s axe at 18850 rad/s (3000 cps); analyzes environment temperature is 19.85 °C. The results of objects analyzes is projected in images, when projectiles flying time from when it‘s fired reaches 29 µs, 76 µs and 123 µs. Also listed are graphical results: projectile speed dependence from time; projectile energy dependence from time and targets plasticity deformation dependence from time. |
