The Experimental Research Of Isentropic Magnetically-Driven Flyer Plates Technique

Magnetically driven isentropic loading technique is to accelerate flyer plate by the magnetic field produced by fast current pulse and give very high velocity to flyer plate.The basic principle is to generate strong magnetic field between cathode and anode ,then the magnetic pressure will driven the flyer plate to very high velocity .By using this technique,we can get smoothly increasing quasi-isentropic loading , which is used to load specimens to isentropic state.It can generate very high pressure in materials or drive flyer plates to fly in very high speed,and in the same,the increase of temperature is relatively low in flyer plates or materials.That is to say ,this technique can realize the isentropic load or drive,so the new load technique has important application foreground.In our work,through our study of theory and experiments we establish the basic theory model and numerical simulation of the isentropic driven flyer plates technique,establish isentropic driven flyer plates device,establish devices to measure the velocity of flyer plates by using the VISAR and optic fiber probe.We use program 3S to calculate the velocity history of flyer plates and is consistent to the experiment results.The numerical simulation results indicate that the temperature increasing is relatively low in flyer plates and the load is quasi-isentropic.To the next research of isentropic load and driven flyer plates,our work give the foundation of basic experiment technique and theory model.