首页|Dynamic response of armor-piercing bullets to blunt and penetration with protective gelatin
Dynamic response of armor-piercing bullets to blunt and penetration with protective gelatin
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To investigate the coupled damage mechanism of blunt impact and bullets penetration after penetrating ballis-tic plates against human body targets,experiments were conducted using 6.8 mm caliber armor-piercing bullets against gelatin targets with protective coatings.A numerical analysis model was developed to simulate bullet pen-etration into gelatin with protective coatings,obtaining endpoint characteristic quantities such as bullet velocity changes,changes in energy distribution,pressure,stress,and stress wave variations within the gelatin target after protection.The results indicate that at a velocity of 640 m·s-1,the 6.8 mm caliber armor-piercing round failed to penetrate the ballistic plate yet still caused a blunt impact depression of 37 mm in depth.Under conditions where the bullet did not penetrate the ballistic plate,approximately 80%of the bullet's kinetic energy was absorbed by the ballistic plate.At a velocity of 740 m·s-1,the bullet penetrated the ballistic plate,resulting in a blunt impact depression depth of 56 mm and an instantaneous cavity with a maximum diameter of 60 mm.During the process of penetrating the ballistic plate,approximately 50%of the bullet's kinetic energy was absorbed by the ballistic plate,and about 40%of the remaining kinetic energy transferred into the gelatin during the penetration of the target.
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NSTL
万方数据
