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针对混凝土介质应用球形空腔膨胀理论,采用Mohr-Coulomb屈服准则,在Euler坐标系下导出了空腔表面应力的表达形式,建立了弹丸垂直侵彻混凝土介质时的侵彻方程,给出侵彻深度和加速度的计算模型,并结合实例将理论预报结果同弹径50mm、质量2.4kg、撞击速度300~450ms-1弹丸垂直侵彻混凝土靶板的试验结果进行了对比分析。
According to the theory of spherical cavity expansion applied to concrete media, the expression of cavity surface stress in Euler coordinate system was derived by Mohr-Coulomb yield criterion. The penetration equation of projectile penetrating concrete medium was established. Depth and acceleration of the projectile. The results of the theoretical prediction are compared with the experimental results of the vertical projectile penetrating concrete target plate with the projectile diameter of 50mm, the mass of 2.4kg and the impact velocity of 300 ~ 450ms-1 projectile.