Influence of different shaped charge parameters on jet penetration into metallic target

Abstract

In this paper, Autodyn-2D hydrocode is used to investigate the influence of shaped charge parameters on penetration performance. Two different algorithms of Autodyn-2D hydrocode are used to predict the jet penetration depthsinto steel target; they are: i)jetting analyses algorithm, and ii) jet formation and penetration algorithm. To validate the predictions of the present work, Autodyn hydrocode is fed with the data of tested shaped charges with different liner thicknesses. The predicted penetration depths are compared with the corresponding experimental measurements; good agreement is generally obtained. Then, the shaped charge with liner thickness of 1.1mm, that gives the maximum jet penetration into steel target, is selected to study the influence of other different shaped charge parameters on its penetration performance. These parameters include form, material and thickness of liner, standoff distance and type of high explosive material. The influence of each studied parameter is evaluated by comparing the jet penetration performance with that of the selected shaped charge. Samples of the obtained predicted results showing the influence of each shaped charge parameter on jet formation and its penetration depth into steel target are presented and discussed. Four configurations are simulated into Autodyn-2D hydrocode considering the parameters that improve the penetration performance of the selected shaped charge. The obtained predictions result in the replacement of RDX by HMX explosive type and increasing the standoff distance from 29 to 40mm of the selected shaped charge will improve its penetration capability by 28.5%.

Study on the Penetration Performance of a Double-Angle Linear Shaped Charge: Performance Improvement and Miniaturization

“…In this study, simulations were performed by applying the erosion value as an instantaneous geometric strain of 2.5. El-Sayed studied the shape charge penetration characteristics for various design variables using ANSYS Autodyn-2D, and performed a mesh size sensitivity test [16]. The appropriate mesh size was found to be 0.125 mm, with 0.25 mm available to reduce the analysis time.…”

“…A double-angle linear shaped charge (DALSC), which has the opposite shape to the previous study of a bi-apex angle linear shaped charge (BLSC), was designed and a penetration performance study was conducted. Research on the double-angle liner has already been conducted on a conical shaped charge and proven its performance [16,17]. However, there are no cases of applying the double-angle liner to a linear shaped charge.…”

Research of influence of different shaped charge liner materials on penetration depth using numerical simulations

“…El-Sayed et al [37] varied different parameters (liner thickness, material, and apex angle, type of explosive and standoff distance) of the shaped charge. By selecting optimal parameters (optimal liner thickness, shape, materials, and standoff distance) they were able to significantly increase penetration depth (up to around 30%).…”

Influence of the mass of energetic material and stand-off distance on the performance of perforator charges

“…El-Sayed et al [9] investigated the influence of liner thickness of perforator charges on their penetration performance experimentally and numerically. They conducted an experimental program in which they constructed perforator charges with liner thicknesses ranged from 0.8 to 1.2 mm.…”