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Investigation of penetration characteristics of shaped charge jet impacting behind-armor liquid-filled containers
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Journal Article
Investigation of penetration characteristics of shaped charge jet impacting behind-armor liquid-filled containers
2025
Overview
The impact of high-velocity penetrators into liquid-filled containers can generate hydrodynamic ram effects, potentially causing catastrophic structural damage to the container. Previous studies have primarily focused on undeformed penetrators, such as fragments or bullets, with limited attention directed toward shaped charge jets. This study investigates the penetration characteristics of shaped charge jets impacting behind-armor liquid-filled containers, with particular emphasis on jet–liquid interactions. A theoretical penetration model incorporating material compressibility and jet stretching was developed based on the virtual origin theory. A high-speed imaging experimental system was designed to capture the jet motion within the container. The impact process was numerically reproduced using ANSYS/LS-DYNA, and the effects of standoff and overmatch on jet penetration were analyzed. The results reveal that jet stretching induced by increased standoff enhances the penetration velocity of the jet. A proportional relationship between the stretching factor (λ) and the overmatch parameter (I) was identified, with λ ranging from approximately 1.22 to 1.38 times I across the studied standoff range (80–220 mm). The findings offer a basis for future studies on the pressure distribution in the liquid and the structural response of containers.
Publisher
Elsevier B.V,KeAi Publishing Communications Ltd,KeAi Communications Co., Ltd
