不同起爆方式下离散杆战斗部爆炸驱动杆条的数值研究

Numerical Simulation of the Process of Discrete Rod Deployed by Different Modes Detonation

利用ANSYS建立了离散杆战斗部三维有限元模型,采用非线性动力分析软件LS-DYNA,应用Lagrange算法,对离散杆式战斗部的杆条在三种不同起爆方式爆炸载荷作用下的驱动过程和离散杆的飞散过程进行了模拟。研究发现:中心轴起爆使杆条环整体速度较大且毁伤目标可靠性最高;模拟结果与参考文献数据一致,为离散杆战斗部设计提供了有益借鉴。

The three-dimensional FEM models of discrete rod were built with ANSYS. The warhead explosively driven process was numerically simulated by LS-DYNA with Lagrange algorithm. The study shows centre point initiation make discrete rod achieve higher speed and reliability for target damage. The result of numerical simulation is consistent with the literature data; it can be referred to discrete rod warhead design.