Abstract
In this paper, a novel linear shaped charge (LSC), called a bi-apex-angle linear shaped charge (BLSC), has been designed to investigate the improvement of penetration performance. Compared with a traditional single-apex-angle LSC, a BLSC, which consists of a small-apex-angle liner and a large-apex-angle liner, has been investigated by depth-of-penetration (DOP) test. The results show that the penetration depth of BLSC is 29.72% better than that of an ordinary LSC. An Eulerian method is applied to simulate the entire process of jet formation, as well as penetration on a #45 steel target. The effectiveness of the Eulerian model is demonstrated by the good agreement of the computational results with experimental observations. Furthermore, the numerical simulation is developed to investigate the influence of liner thickness, explosive type, combination of small and large apex angle, ratio of small to all apex angle liner, and standoff distance on the penetration performance of BLSCs. The suggested work and results can provide a guide and reference for the structural design of BLSC.
Highlights
In some emergencies, such as suspect capture, emergency rescue, and fire rescue, the first question is how to quickly open an emergency passage
This paper describes anbi-apex-angle experiment using bi-apex-angle linear shaped charges (BLSCs) for effective penetration
When the copper liner elements arrived at collision point, the velocity of the outer liner elements was lower than that of the inner linerthe liner elements moved to the left theouter collision and formedlower a slug
Summary
In some emergencies, such as suspect capture, emergency rescue, and fire rescue, the first question is how to quickly open an emergency passage. For the simulation smoothed the simulation method, smoothed particle hydrodynamics was used to investigate the formation process of a linear-shaped charge jet [10,11,12]. This describes experiment using linear shaped liner. This paper describes an paper experiment usingan linear bi-apex-angle shaped charges (BLSCs) for single-apex-angle liner. This paper describes anbi-apex-angle experiment using bi-apex-angle linear shaped charges for effective penetration. The greatest distinguishing a BLSC the traditional LSC a small-apex-angle liner thatLSC is added adifference. Difference distinguishing a BLSC from the traditional LSC isthat a small-apex-angle liner that is added in an ordinary liner. The present provides aperformance guidance and and large angles, and a ratio of small to allBLSCs. apex angle liners on the penetration of BLSCs. The present study provides a guidance and reference for the structural design of a BLSC.
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