Description and Validation of an Improved Frangible Armour Piercing MunitionModel

摘要

Frangible Armour Piercing Discarding Sabot (FAPDS) munition is a new type ofmedium calibre munition for air defense systems. Its penetration behaviour has been studied by TNO-PML in cooperation with BWB, IABG, and Rheinmetall. These studies lead to a simulation model describing the penetration behaviour of 35 mm FAPDS projectiles m thin plate arrays. This report discusses an improved version of the semi-empirical terminal ballistics model for FAPDS munition. With regard to the first simulation model (as reported in report PML 1992-6), the characteristics of the fragmentation process have been changed (use of Mott distribution instead of random distribution, increase in number of particles, and decrease in scattering angle), and the parasitic effect has been described more accurately (effect of hole and particle size on penetration behaviour is included). Due to the changes in the model, the simulation results are consistent with the experimental results. Now, the maximum penetration capacity and the fragment beam width can be calculated accurately for 35 mm FAPDS munition. The influence of the target array composition and the rifling twist of the gun on the simulation results can he predicted well too. However, some problems still have be solved before the terminal ballistics model can be incorporated into a vulnerability assessment code. The major problem is to find a way to deal with synergistic effects. Penetration, Target vulnerability, Fragmentation, Models, Terminal ballistics, Computerized simulation.