Effect of Coarse Aggregate Type on the Residual Velocity of Rigid Projectile Perforating Concrete Target

Abstract

Algorithms for generating and distributing random 3D sphere coarse aggregates were proposed. The 3D finite element mesoscale concrete model, which consists of mortar matrix and coarse aggregates, was established based on the theory of background element and material identification. The interfacial transition zone was simplified as a kind of contact between elements. Based on this model, continuous finite element code was used to simulate the process of rigid projectiles perforating concrete targets and the effect of 3 different coarse aggregate types on residual velocities was analyzed. This work indicates that the strength and density of coarse aggregates affects the residual velocity under lower and higher impact velocity respectively.

Study of the anti-penetration performance of concrete with different coarse aggregate content

“…Fang and Zhang (2014) and Deng et al (2017) studied the effect of coarse aggregate on the projectile deflection. Zhang et al (2014) studied the effect of the aggregate type on the projectile perforation velocity. The current experimental study about the effects of coarse aggregate content on penetration focuses on thin target perforation and shallow penetration, and is lack of deep penetration research.…”