Abstract
Coarse aggregate settlement may occur during concrete pouring, which affects the ability to resist projectile attack. In order to study the anti-penetration performance of concrete, and obtain high penetration resistance concrete, mesoscale finite element model of different aggregate space distribution of concrete was established, the numerical simulation of long rod rigid projectile penetrating into different concrete was conducted. The results showed that aggregate settlement had great influence on target scabbing; aggregate size and settlement had limited influence on projectile residual velocity.
Highlights
Concrete is widely used in civil engineering, and its performance to resist projectile penetration has attracted wide attention in military field [1]
Coarse aggregate settlement may occur during concrete pouring, which affects the ability to resist projectile attack
The results showed that aggregate settlement had great influence on target scabbing; aggregate size and settlement had limited influence on projectile residual velocity
Summary
Concrete is widely used in civil engineering, and its performance to resist projectile penetration has attracted wide attention in military field [1]. It is of engineering practical significance to study the effect of aggregate spatial distribution on the anti-penetration performance of concrete. The influence of aggregate on penetration was studied by experiment and numerical simulation. The effect of aggregate size on the residual velocity of projectile was experimental studied by Werner et al [3]. Fang et al [5] numerically simulated the effects of aggregate size, aggregate strength and aggregate volume fraction on projectile deflection in deep penetration. Numerical simulation of penetrating mesoscale concrete was carried out, and the influence of aggregate size and aggregate settlement on target scabbing and projectile residual velocity was studied. Four targets are studied, as shown, taking into account the maximum aggregate size and aggregate settlement.
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