Enhancing impact velocity with shock interactions in a restricting die

18th APS-SCCM; 24th AIRAPT

Anderson, W.W.^1 ; Jensen, B.J.^1 ; Cherne, F.J.^1 ; Owens, C.T.^1 ; Ramos, K.J.^1 ; Lieber, M.A.^2

WX-9, Los Alamos National Laboratory, MS P952, Los Alamos

NM

87545, United States^1

W-6, Los Alamos National Laboratory, MS P950, Los Alamos

NM

87545, United States^2

关键词: Converging shock waves;    High pressure;    High velocity;    Impact velocities;    Shock compressions;    Shock interactions;    Single stage;    Velocity enhancement;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/14/142001/pdf
DOI  :  10.1088/1742-6596/500/14/142001

来源: IOP

【 摘 要 】

Shock compression and impact studies could benefit from the ability to increase impact velocities that can be achieved with gun systems. Single-stage guns have modest performance (0.2-2 km/s) that limits their utility for high-pressure and high-velocity studies, while more capable systems are expensive and complex. We are developing a technique that uses a low-strength sabot with a tapered die to increase the impact velocity without modifying the gun itself. Impact of the projectile with the die generates a converging shock wave in the sabot that acts to accelerate the front of the projectile, while decelerating the rear portion. Preliminary experiments using this technique have observed a velocity enhancement of up to a factor of two.