在地基梁类比方法基础上,建立了一组充液金属圆柱壳受平头弹体侧向正冲击的理论分析模型.该模型可以确定冲击过程圆柱壳的整体变形及弹体的穿透破坏.利用该模型计算了弹道极限速度.弹体及圆柱壳的冲击响应历程,特别地,分析了内压对弹道极限速度等参数的影响,得到了内压与弹道极限速度的定量关系和一些有意义的结论,理论结果与已有实验结果基本吻合“,”It has been developed that a group of the theoretical models used in analyzing transient dynamic response for metallic cylindrical shells filled with liquid impacted by flat nosed missiles at normal obliquity on the basis of the analogy modeling method of beam on foundation. It can be used in solving the global deformation and the local failure of cylindrical shells in the process of impacting. The ballistic limit speed and impact response history have been calculated by this group of theoretical models, and it has been especially discussed the effect of inner pressure on the ballistic limit speed and some parameters. The quantitative relationship between internal pressure and ballistic limit speed and some significant conclusions have been obtained, which are basically identical with experimental results.