弹体对混凝土介质侵彻、贯穿的比例换算关系

根据介质抗侵彻的变形和破坏模型,从近区应力与变形状态实际出发,利用波阵面上的动量守恒关系和弹体表面的连续运动规律,推得了介质近区运动学的关系式,从而得到了作用在弹体表面的应力表达式。通过破碎区与径向裂缝区的能量传输关系,揭示了侵彻与贯穿问题的比例尺度关系的规律,给出了具有宽广范围的侵彻计算公式,并通过与现有经验公式计算结果的对比验证了该公式的可靠性。

The scaling problems of penetration and perforation for projectile into concrete media

An analytical model is described for characterizing the deformation and failure behavior of the concrete in the process of penetration and perforation. According to the energy balance relationship crossing the wave front, the continuity of movement of the surface of projectile and the energy transfer, the scaling law in penetration and perforation is uncovered, resulting in a formula for computation of penetration on wide scales and the perforation process on a sound physical background. The proposed formula agrees well with the establised empirical equations.