EVALUATION OF SHAPED CHARGE PERFORMANCE UNDER ITS VARIABLE FACTORS | ||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||
| Article 7, Volume 16, 16th International Conference on Applied Mechanics and Mechanical Engineering., May 2014, Pages 1-20 PDF (242.93 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/amme.2014.35483 | ||
| Authors | ||
| S. A. Ahmed1; A. M. Riad2; A. Z. Ibrahim2 | ||
| 1Military Factory No. 99, National Authority for Military Production. | ||
| 2Egyptian Armed Forces. | ||
| Abstract | ||
| ABSTRACT In this paper, two main research directions are used to investigate the shaped charge phenomenon and to evaluate its performance. These directions are: (i) analytical and (ii) numerical simulation. The analytical direction is presented by a model consisting of three main phases; these are: (i) jet formation, (ii) jet break-up, and (iii) jet penetration phases. The governing equations that predict the main parameters associated with each phase are presented. These equations are compiled into a computer program; the input data to the model is that of shaped charge model xx. In numerical simulation direction, Autodyn-2D hydrocode is used to simulate the xx shaped charge phenomena and to assess the predictions of the analytical model. The predictions of the analytical model are compared with the corresponding measurements of the tested shaped charges of Ref. [8]; good agreement is generally obtained. In addition, the present results of both research directions are mainly concerned with predicting the effects of some factors of shaped charge model xx on its performance. These factors are: (i) liner thickness, (ii) liner material, (iii) cone angle, (iv) type of explosive and (v) standoff distance. Samples of the predicted results representing the effect of each studied factor on the associated parameters with jet formation and jet penetration phases are presented with relevant analysis and discussions. It was found that the analytical results and the corresponding code predictions were consistent. The obtained results recommended the use of powerful explosive, the decrease of cone angle and the increase of standoff distance, keeping the jet continuity, for increasing the performance of shaped charge model xx. | ||
| Keywords | ||
| Shaped charges; Jet formation; Modified Bernoulli's equation; shaped charge performance; Autodyn-2D; Modeling and simulation | ||
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