二维弹塑性磁流体力学数值模拟

为了研究物质弹塑性对磁驱动实验运动过程、不稳定性发展等的影响，在MDSC2程序的基础上，增加了弹塑性模块，研制了包括弹塑性的磁流体力学程序，并进行了弹塑性项影响的数值模拟和分析。数值模拟表明:没有初始扰动时，弹塑性项几乎不影响套筒内外半径的运动轨迹；有初始扰动时，弹塑性项对磁驱动固体套筒的Rayleigh-Tayor不稳定性有明显的抑制作用。

Two dimensional elastoplastic MHD numerical simulation

In magnetically driven experiments, such as solid liner implosion, magnetically driven flyer plate emission and magnetically driven quasi-isentropic/impulse compression, the metal starts from a solid phase and gradually turns into liquid phase by ohmic heating. In order to study the effects of material hardness the solid phase has on those magnetically driven experiments, we have added an elastoplasticitic module to the two-dimensional magnetically driven simulation code (MDSC2). With this code, we carried out numerical simulations of the development of Rayleigh-Taylor (RT) instability in magnetically driven solid liner implosion. The numerical results show that while the elastoplasticitic term has little effect on the trajectories of the inner and outer radius of the solid liner without an initial disturbance, it suppresses significantly the RT instability growth of the magnetically driven solid liner with an initial disturbance.