Hellow guys, Welcome to my website, and you are watching EXPLOSIVELY FORMED PENETRATOR SIMULATION | EFP Shaped Charge Armour Piercing Simulation. and this vIdeo is uploaded by SY Simulations at 2023-06-17T07:00:22-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
| Name | EXPLOSIVELY FORMED PENETRATOR SIMULATION | EFP Shaped Charge Armour Piercing Simulation |
| Video Uploader | Video From SY Simulations |
| Upload Date | This Video Uploaded At 17-06-2023 14:00:22 |
| Video Discription | An Explosively Formed Penetrator (EFP) is a type of shaped charge where the liner is formed into a high velocity slug, rather than a hyper velocity jet (which most shaped charges are). EFPs are infamous for their effectiveness as IEDs, which were used with great effect in the Iraq War. The simulation presents a large, simple EFP, against 75mm of Rolled Homogenous Armour (RHA) at 800mm (4 Charge Diameters) of standoff. The EFP modelled is 200mm wide, 200mm deep, with a 8mm thick copper liner, and TNT explosive filler. The detonation point is at the back centre of the charge. In the simulation, the slug reaches a velocity of ~1500m/s. The formation and velocity of the EFP is in decent agreement with experimental data of similar EFP designs. There are a variety of ways to simulate EFPs, with most modelling the liner as a Eulerian body, due to the large amounts of deformation. However, as the EFP slug takes a large distance to form and is relatively thin, the Eulerian domain would need to be very long and with a fine mesh, resulting in an exceptionally large amount of cells and a slow simulation. Due to this, I chose to test if a Lagrangian liner would be suitable, with the results being surprisingly promising. The copper liner is made of 3D elements with a strain failure limit (this strain limit should be higher, however these excessively strained elements reduce the time increment and slow down the simulation so a compromise was made -this is why some of the material in the tail 'breaks' and converts to particles). A sheet body could be used for the liner as well, but this wouldn't be as visually impressive, especially in a crossection view. |
| Category | Science & Technology |
| Tags | efp | projectile | penetrator | shaped charge | simulation | penetration | armour | perforation | tanks | ied | missile | mine | blast | explosion | ww2 | armor | cold war | military |
