着速和着角对硬目标侵彻过载影响的数值仿真分析

利用数值仿真工具LS-DYNA3D,对整体侵彻弹侵彻有限厚混凝土靶板问题进行了数值模拟实验。仿真结果表明,着速和着角对侵彻过载有很大影响,着速越高,侵彻过载峰值越大;着角越小,过载曲线越平滑,过载峰值的出现也渐显规律。仿真实验结果与试验相符,为硬目标侵彻引信的设计及性能评估提供参考。

Research on Numerical Simulation of Impact Velocity and Impact Angle to Hard Target Penetration Acceleration Influence

The numerical simulation experiment of whole penetration bomb penetrating limited thick concrete target was proposed by using numerical simulation tools of LS-DYNA3D. The simulation results indicate that impact velocity and impact angle have much influence to penetration acceleration, the higher impact velocity is, the bigger the peak value is; the smaller the impact angle is, the smoother the acceleration curve is, and the peak value of acceleration appears regularly. The simulation result accords with the experiment, and provides reference for the design and capability evaluation of hard target penetration fuze.