STUDY ON THE PENETRATION DEPTH OF SHAPED CHARGE JETS INTO HIGH STRENGTH CONCRETE TARGETS

Abstract

The performance of high-strength concrete in jet penetration was investigated in this paper. The penetration results of the two sizes shaped charge jet penetrating four strength concrete tests were compared. The factors affecting the jet's penetration of concrete were analyzed. It was found that the dynamic impedance played a dominant role in weakening the jet penetration ability, whereas the static impedance of the target had little effect on the penetration depth of the jet. The effect of the target strength showed only a very limited improvement in the ability to resist penetration, although its role was gradually manifested with decreasing penetration speed and increasing compressive strength of the target. A revised and concise penetration depth prediction model was established based on the cavity expansion theory and Forrestal equation. The calculation error of the model is very small and it is suitable for concrete of a variety strengths.