Numerical Simulation Of A New Kinetic Energy Projectile Penetration Of Concrete

Since the Gulf War, Several local wars in recent had showed that ,with the increasing damage capacity of precision-guided weapons for ground targets, most important military targets to be placed under ground by various countries and the protective structure of these targets is more and more strong. The conventional ammunition cannot damage these deep underground targets effectively. In order to effectively deal with this type of target, many countries has been started to develop the warhead of the kinetic energy projectile, and has been successfully applied to a variety of weapons.This paper firstly introduces the development and present research status of the warhead on the kinetic energy projectile, and briefly presents some constitutive models and characteristic of concrete. On this basis, this paper conducts a three-dimensional numerical simulation of the process that the kinetic energy projectile into concrete.H-J-C model is chosen as the concrete constitutive model and the projectile vertical and oblique penetration into concrete has been simulated. Through the comparison with the traditional projectiles vertical penetration into concrete with different velocity find that the new projectile's velocity after penetration is bigger than the others and its peak impact acceleration is the smallest. But when the projectiles oblique penetration into concrete the pointed nose projectile's penetration ability is better than the new one.The new projectile with different structural normal penetration into concrete target is simulated, by the numerical simulation the different structure in different velocity situation after the invasion with chester curve, and quickly to impact acceleration calculation results was analyzed and compared, and some useful conclusion are obtained. The results settle scientific foundation for further study of kinetic energy penetration warhead.