聚能装药垂直侵彻橡胶复合装甲的变形研究

基于Bernoulli方程推导了橡胶穿孔半径以及运动速度的变化规律，对聚能装药垂直侵彻橡胶复合装甲的作用过程进行了分析。在此基础上结合流变学理论，对橡胶复合装甲的面板和背板的变形进行了研究，建立了一种计算复合装甲变形的工程计算模型。通过数值仿真和试验的方法对理论模型进行了验证。结果表明:橡胶复合装甲的变形与橡胶的体积流率、初始压力以及材料本身特性有关。在距离射流轴线半径20mm~80mm范围内，理论、仿真与试验三者所得到的面板的变形结果吻合较好。运用所建立的模型，可以较为精确的反映面板变形规律。

RESEARCH ON DEFORMATION OF RUBBER COMPOSITE ARMOR AGAINST SHAPED CHARGE VERTICAL PENETRATION

The variation in the carter radius and the velocity of rubber layer are derived via a Bernoulli’s equation. The performance of the rubber composite armor against the shaped charge jet is investigated, and an engineering model for the deformation of armor plates is presented based on rheological theories. By conducting 3D numerical simulations and X-ray experiments, the deformations of the rubber composite armor are measured to verify the engineering model. The results indicate that the deformation of armor is relevant to the volume flow rate, original pressure, and material characteristics. A comparison between theoretical and numerical results and experimental data demonstrates an improved agreement at distances between the jet axis and center of armor of approximately 20mm to 80mm. Therefore, the model presented in this paper accurately calculates the deformation of armor.