Abstract
A model for shaped charge warhead design was developed. The model is incorporated in the computer code - CUMUL. The code includes detonation wave profile estimation, liner collapse, arrival of collapsed liner to the centerline of shaped charge, jet creation and jet breakup. The penetration phenomena are discussed and governing equations are presented. Two cases dealing with the target type are included: homogenous and non-homogeneous targets. For the purpose of verifying CUMUL, a set of 20 specimens of shaped charges was tested. The tests were directed to investigate the effect of cone apex angle and stand-off distance on the performance of shaped charge. From the comparison between experiments and CUMUL results, it was concluded that CUMUL program shows a good agreement with the experiments. That enables it to be a powerful tool for shaped charge warhead design.
Highlights
1.1 Input DataShaped charges are extremely useful when an intense, localized force is required for the purpose of piercing a barrier
The main application is in the military arena, for high explosive antitank (HEAT) rounds including hand-held rounds, gun-launched rounds, cannon-launched rounds, and various bombs
The shaped charge was analysed using an analytical approach for preliminary analysis and parametric studies to determine an approximate design that could satisfy technical requirements. For this purpose we developed models for the following phases: a) estimation of explosive properties, b) detonation wave properties and profile, c) calculation of liner driven velocity, d) calculation of liner collapse velocity and angle, e) jet length determination, f) estimation of target penetration
Summary
Shaped charges are extremely useful when an intense, localized force is required for the purpose of piercing a barrier. The shaped charge was analysed using an analytical approach for preliminary analysis and parametric studies to determine an approximate design that could satisfy technical requirements For this purpose we developed models for the following phases: a) estimation of explosive properties, b) detonation wave properties and profile, c) calculation of liner driven velocity, d) calculation of liner collapse velocity and angle, e) jet length determination, f) estimation of target penetration. These models are included in CUMUL computer code. CUMUL program calculations are compared with experimental results that include the study of liner apex angle and stand-off distance influence on the penetration of 64 mm anti-tank rocket with shaped charge
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