Amplifying Effect of Spacer Shaped Charge on Eccentric Initiation

Spacer shaped charge can effectively adjust the detonation wave to improve the jet penetration capability; asymmetric initiation may lead to eccentric jet deflection, speed reduction and other phenomena, which is called the eccentric initiation effect.In the actual production process, however, it is difficult to control the detonation point of the shaped charge warhead and the installation of the wave-shaper.The present work investigated the effect of the partition on the shaped charge jet under eccentric initiation by using a finite element software LS-DYNA with ALE algorithm, and compared the forms and velocity distributions of the shaped charge jet at different eccentric amounts with and without partition.The results show that the shaped charge with a separator amplifies the eccentric initiation effect, and the greater the eccentric amount, the more obvious the amplifying effect.