长杆弹超高速侵彻半无限靶理论模型的对比分析与讨论

Comparisons of long rod high velocity penetration models for semi-infinite targets

分别基于六组典型长杆弹超高速侵彻金属靶体以及三组长杆弹侵蚀侵彻混凝土靶体的实验数据,对经典一维AT模型及其五个改进模型对弹体侵彻深度的预测能力进行了评估,并讨论了靶体等效强度(Rt)变化以及弹体的轴线速度变化。计算结果表明,对于长杆弹高速侵彻金属靶体的分析计算,应首选AW模型,其次为LW模型。而对于混凝土靶体,已有有限的实验数据表明,上述六个模型对于长杆弹侵蚀侵彻混凝土靶体侵彻深度预测均不适用,其主要原因在于Rt不能反映超高速侵彻下混凝土靶体的响应。最后基于分析结果,给出了长杆弹侵蚀侵彻混凝土靶体进一步的研究方向。

Based on four typical metal penetration and three concrete penetration experimental data, the predication performance for depth of penetration of six theoretical models were analyzed and evaluated, respectively. The target resistance （Rt） and the time history curve of axial velocity were discussed. The calculation results indicated that the A W model is the best for long rod projectile penetrating into metal targets. However, calculation results showed that none of the six penetration models are suitable for the concrete target, mainly due to the difference of response between metal and concrete targets under high velocity impact. In addition, further research interest on the hypersonic velocity penetration of concrete target was proposed.