椭圆截面弹体侵彻混凝土阻力特性研究

In order to study the stress characteristics of projectile head during the process of penetrating concrete with elliptical cross-section heterogeneous projectile, numerical simulation of circular and equal cross-sectional area of the elliptical cross-section projectile penetrating concrete process was carried out, and the relationship between the normal stress and the normal velocity on the head surface during the penetration of different projectiles was analyzed. The relationship between the normal stress and the normal penetration velocity of the elliptical cross-section projectile's head surface at different ratios of the major axis to the minor axis and the position of the element was obtained, and the elliptic cross-section body penetration calculation formula was also obtained. The results show that compared with the same cross-sectional area of the circular cross-section projectile, and at the same normal velocity, the normal stress of elliptical cross-section projectile surface increases with the distance from the element of the head to the center of the ellipse. At the same penetration velocity, the penetration depth of the projectile increases with the ratio of the major axis to the minor axis of the cross section.