伸出式侵彻体斜侵彻有限厚靶板数值模拟

文中进行了伸出式侵彻体斜侵彻有限厚靶板的试验，利用有限元程序LS-DYNA对伸出式侵彻体侵彻有限厚靶进行了三维数值模拟，从靶后动能的角度和同质量同外径的基准杆的侵彻能力做了比较。分别描述了伸出式侵彻体和基准杆侵彻靶板的物理图像．得出了侵彻体动能随时间的变化规律。结果表明在整个火炮初速范围内，伸出式侵彻体的动能下降率要小于基准杆；在低速段，伸出式侵彻体相对于基准杆的优势不是很明显。但随着撞击速度的增大，伸出式侵彻体的靶后动能优势较为明显，而且靶后动能的增益随侵彻速度的增加而增加。

Numerical Simulation of Extended Penetrator Oblique Penetration into Finite Target

The experiments of extended penetrator oblique penetration into finite target are carried out. 3D numerical simulation is carried out for the penetration course by LS-DYNA, which is contrasted to that of the baseline rod of the same mass and outer radius. The physical status of the penetrations are described and the variation of kinetic energy to time are got for extended penetrator and baseline rod respectively. The results say that the kinetic energy behind target of extended penetrator decreases slower than that of the baseline rod at the whole ordnance velocity. The merit of extended penetrator is not obvious at low velocity but more obvious at high velocity. The merit also rises with the rise of velocity.