A Study of the detonation wave shape inside confined explosive with a metallic copper liner | ||
| The International Conference on Chemical and Environmental Engineering | ||
| Volume 10, Issue 10, July 2020, Pages 1-10 PDF (1.38 M) | ||
| Document Type: Original Article | ||
| DOI: 10.1088/1757-899X/975/1/012007 | ||
| Authors | ||
| Tamer Elshenawy1; Ahmed Elbeih2; Mohamed G. Zaki2; Ahmed K. Hussein2 | ||
| 1Technical Research Center, Cairo, Egypt. | ||
| 2Military Technical College, Kobry Elkobbah, Cairo, Egypt. | ||
| Abstract | ||
| The behaviour of shock wave inside a shaped charge is so important that the detonation wave nature characterizes (determines) the degree of jet coherency at the liner interface. The detonation wave shape inside the shaped charge depends on the casing thickness, material, the liner material, geometry and the applied wave shaper geometry. In this paper, a series of numerical simulation models were performed to study the incident and reflected waves and to characterize the resulting shock wave front to evaluate its effect on the produced (generated) jet characteristics. The used code was Autodyn 3D based on non-linear dynamic analysis with jetting analysis model. Inert wave shapers (Lead, Aluminium and steel) and active ones (TNT and PETN) behaviour were studied. The liner type used in this study was copper with in which the apex angle of the liner cone was 40o. It was concluded that the wave front shape has an obvious influence on the characteristics of the jet formation and its properties such as mass of jet and velocities of its tip. Also, the bulk sound speed of the liner itself in addition to the collapse characteristics of the liner was discussed in this paper successfully. | ||
| Keywords | ||
| Liner; wave shaper; explosive shock wave; jetting; Autodyn code | ||
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