EXPERIMENTAL AND NUMERICAL STUDY OF THE INTERACTION BETWEEN A SHAPED CHARGE JET AND A SINGLE ERA MOVING PLATE

Abstract

An analysis of the interaction mechanisms between a Shaped Charge Jet (SCJ) and a single Moving Plate (MP) is proposed in this article using both experimental and numerical approaches. Both Backward Moving Plate (BMP) and Forward Moving Plate (FMP) collisions with a SCJ were tested with an experimental set-up presented in this article. A methodology, adapting the virtual origin approximation, is also proposed to analyze in detail the experimental results, extracting some comparative data. ???? simulations complete the analysis. The proposed explanation for the development of different interaction regimes is that the SCJ/MP interaction is driven at first order by the contact geometry. In the collision point frame of reference, the BMP flows in the same direction as the jet, causing its overall deflection. On the contrary, the FMP flow opposes that of the jet leading to an alternative creation of fragments and ligaments.