125mm HE vs SPACED ARMOUR | 3OF19 High Explosive Armour Penetration Simulation

Simulation of the 125mm 3OF19 HE-FS projectile against single plate armour and spaced armour. Spaced armour is supposed to improve protection against explosives, as the air gap allows for the blast energy to be dissipated before hitting the armour underneath. The total metal weight and thickness is equal for both tests, but with the spaced armour having an air gap of 125mm. Plates are mounted at 60° for all tests. Approximate velocity of the fragments is around 1400 m/s. Material Properties taken from literature, 3OF19 from wikipedia: [1] RHA: [2] Air & TNT: [3] 3OF19 specs: #3VOF22/3OF19 To note: The tail assembly and fins have not been modelled as they would have no effect on the penetration. SPH would have been better for this model but I didnt have the time or the computational power to implement it properly.