Perforation of Plastic Spherical Shells Under Impact by Cylindrical Projectiles
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摘要: 对球形塑性壳在平头圆柱体冲击下的动力贯穿行为进行了分析．通过引入等度量变换，给出了壳体的变形模态．在此基础上对球壳在平头圆柱体撞击下的贯穿机制进行了分析研究，给出了贯穿模型，由此结合Hamilton原理，导出了运动方程组．采用Runge-Kutta方法求解了该方程组，最后分别给出了贯穿时间-弹体初速度；残余窝陷半径-弹体初速度；贯穿后弹体剩余速度-弹体初速度的关系曲线．Abstract: The objective is to study the perforation of a plastic spherical shell impacted by a cylindrical projectile. First, the deformation modes of the shell were given by introducing an isometric transformation. Then, the perforation mechanism of the shell was analyzed and an analytical model was advanced. Based on Hamilton principle, the governing equation was obtained and solved using Runge-Kuta method. Finally, some important theoretical predictions were given to describe the perforation mechanism of the shell. The results will play an important role in understanding the perforation mechanism of spherical shells impacted by a projectile.
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Key words:
- thin shell /
- impact /
- perforation
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