Impact detonation threshold study of kinetic energy blocks with angle of attack impacting cased B explosives
In order to study the effect of kinetic block angle of attack on the impact detonation threshold velocity of cased B explosives,numerical simulations were conducted using LS-DYNA simulation software and the Lee-Tarver ignition and growth model to obtain the impact detonation threshold velocity of tungsten alloy kinetic blocks impacting cased B explosives with different cover thicknesses(6 mm,10 mm and 14 mm)at angles of attack from 0° to 90°.The angle of attack correction is introduced into the Jacobs-Roslund impact initiation criterion model,and the obtained impact initiation criterion model is in good agreement with the numerical simulation results.The results show that the impact detonation threshold velocity increases and then decreases with increasing angle of attack in the shell thickness range of 6～14 mm.
impact detonationkinetic energy blockcased B explosivesthreshold velocitynumerical simulation
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