Numerical Simulation on Fragments Dispersion of Three Type Warheads

In order to obtain the integral performance of the deformable warhead,the processes of fragment dispersion of the eccentric initiation warhead,the uniform warhead and the deformable warhead with the uniform caliber and charge type are simulated using the code LS-DYNA.The fragment densities and velocity distribution of these warheads along azimuth angle and ejection angle are obtained.The results show that in comparison with the uniform warhead in the target′s direction(-30°-30°),the gain in fragment average velocity and mass of the eccentric initiations warhead is 124.6% and 103.5%, respectively,and the gain in those of the deformable warhead is 175.9% and 110.2%,respectively.The integral performance of the deformable warhead is better than that of the eccentric warhead.