【摘要】 试验在一级气体炮上进行,采用LS-DYNA中的J-C本构模型及S-C-G本构模型进行了数值模拟.计算结果表明:采用不同本构模型数值模拟的飞片与靶的速度历史明显不同,计及弹托的边侧效应比不计及弹托的边侧效应严重得多,且回收的飞片及靶的严重变形也归结于弹托的边侧效应.更多还原

【Abstract】 The influence of release from sabot boundary on the plane shock wave is studied.The experiments of plane shock wave are carried out on a single stage gas gun and simulated numerically using two kinds of constitutive models in LS-DYNA.It indicates that the velocities of flyer plate and targets computed with J-C constitutive model are different from that with S-C-G constitutive model.It also suggests that the influence of release from boundaries with the sabot on the plane shock wave in planar impact is much greater than that without sabot.The recovered flyer plate and targets are deformed significantly due to the boundary of the sabot.更多还原