Study And Development Of A Projectile Anti-armors

In this dissertation,a research has been made on the tandem warhead,this kind of ammunition is largely used to defeat different types of armors.The warhead studied in this work is basically composed of two main stages,the first one is the shaped charge warhead and the second is the kinetic energy rod projectile.The work done focuses on the effects of different factors on the performances and the abilities of the tandem warhead to defeat a shield plate.The commercial software ANSYS Autodyn has been used to numerically simulate the effect of different factors in both stages.For the first stage and through theoretical analysis and numerical simulation,the forming process of the shaped charge jet formed by the front-stage shaped charge was described,and the three stages of the penetration hole penetration of the target plate by the shaped charge jet were analyzed:impact pitting phase,stable penetration phase and punch penetration phase.A number of factors which affect the shaped charge performances was studied and analyzed and these factors are:liner wall thickness,apex angle and the liner shape.For the second stage;the rod initial velocity,the rod diameter,the rod material and the type of pre-perforated target plate are the factors chosen to study their effects on the rod body performances during the piercing process.This work mainly studies the vertical action process of the tandem warhead on the target plate.In addition,the work covered only the influence of some major factors,still there more factors to be analyzed such as the action of the shock wave and detonation products formed by the front-stage shaped charge explosion on the post-stage rod projectile.