弹引系统攻角侵彻混凝土仿真与试验研究

Experiment and simulation of projectile obliquely penetrating into concrete target at attack angle

利用弹体非正侵彻的计算模型对弹体非正侵彻过程中弹头表面阻力进行了分析,提出了弹目非正侵彻控制方程。利用有限元分析软件LS-DYNA对弹引系统在不同攻角下侵彻混凝土靶板时的轴向过载、横向过载、横向偏移以及弹体姿态角等的变化进行了仿真分析,得出了弹体横向过载与姿态角的对应关系。实弹试验结果与理论计算及数值仿真结果吻合较好。该方法可为侵彻过程中弹体姿态角的识别提供参考。

Based on the calculation model of projectile non normal penetration,the governing equation of projectile target(projectile-target-medium)non normal penetration was given by analyzing the resistance of warhead surface in the process of projectile non normal penetration.The finite element analysis software LS-DYNA was used to simulate and analyze the axial overload,lateral overload,lateral offset and attitude angle of the projectile when the missile guidance system penetrates the concrete target at different angles of attack,and the corresponding relationship between the lateral overload and attitude angle was obtained.Through the live ammunition test,the test results are in good agreement with the theoretical calculation and numerical simulation results,which proves its correctness.It provides a reference for the recognition of projectile attitude angle in the process of penetration.