이중침투탄두의2차충돌구형성수치모델개발

Tandem warheads are complex weapon systems consisting of a shaped charge and subsequent kinetic energy warhead (e.g., projectile), and a crater is developed in two stages. Because accurate crater prediction is vital for evaluating warhead performance, this study investigated secondary craters formed by a projectile penetrating into a primary crater using finite element analysis. We investigated the effect of the first crater's inclination angle on the size of the secondary crater at each striking velocity, approximating the first crater by a shaped charge as a conical shape. The relationship between those variables was discovered and represented by mathematical functions. Finally, we developed a predictive model for the size of secondary craters in tandem warheads and evaluated its utility. The proposed model serves as a valuable tool for analyzing the performance of tandem warheads and enhances the understanding of crater formation mechanisms.