Numerical Study on the Acceleration of Metallic Flyers Driven by Planar Detonation Wave of Explosives

As regards the experimental study on the dynamic properties of materials, planar detonation wave driving flyers to impact target is an important technique. The smoothness and limit speed of flyers under detonation load determine the loading effects. The former determines the target size, and the later determines the pressure to the target. Consequently, based on the coupling ALE and Lagrange method, the simulation for the process of detonation wave driving the flyer is performed, and the smoothness of the flyer is given when it approaches the limit speed. The limit speeds of the flyer from numerical results and analytical solution are comparatively analyzed. Finally, we summariz the numerical results and point out the practicality and effectiveness of the fluid-structure coupling method in studying the motive process of flyers under detonation load.