中文摘要：

磁驱动准等熵加载和超高速飞片发射是一种全新的冲击动力学和高能量密度物理实验加载技术。利用三维磁流体动力学软件,模拟了磁驱动飞片的物理过程,计算得到的飞片自由面速度与实验结果符合较好。通过计算飞片横断面的温度、密度和磁场分布,得到了加载过程中磁扩散速度和飞片的剩余厚度。飞片加载过程中飞片边缘的卷曲变形严重,分析认为是由电流和磁场分布的不均匀导致飞片边侧受斜上方较大的加载力所致,并且电流分布的不均匀是主要因素。实验设计时,可利用极板构型的变化调节加载面的电流分布,从而提高飞片的平面性,减小边侧的卷曲变形。

英文摘要：

The techniques of magnetically driven quasi-isentropic compression and magnetically driven hyper-velocity flyer plates are new experimental method and tool,which are developed in the last dec- ade and widely applied in the fields of shock dynamics and high energy density physics. The physical process of magnetically driven flyer plates was simulated by three-dimensional magneto-hydrodynam- ics software. The calculated free surface velocities agreed well with the experimental results. The mag- netic diffusion velocity and effective thickness of flyer plate were obtained by results of temperature, density and magnetic field profiles. The simulation results show that the side edge deformation of flyer plate is mainly caused hy the non-uniformity of Lorentz force associated with the inhomogeneous dis- tribution of current along the width direction of the electrode panel. Thus, the edge deformation can be improved by optimizing the current distribution on the loading surface of electrode panel along the width direction.