基于A-T模型的长杆弹超高速侵彻陶瓷靶体强度分析

摘要

Alekseevskii-Tate（A-T）模型广泛应用于长杆弹超高速冲击的终点效应分析中。A-T 模型对于金属弹靶强度有明确的表达式，而对于陶瓷靶体强度尤其是弹体初始冲击速度大于1500 m／s 时还没有统一的结论。基于长杆钨弹超高速（1500～5000 m／s）侵彻三种陶瓷（AlN，B4 C，SiC）／铝复合靶体的缩比逆弹道实验数据；基于 A-T 模型，给出了上述陶瓷材料在不同侵彻速度范围内的靶体强度表达式。进一步通过与47发长杆钨弹超高速（1250～2500 m／s）侵彻陶瓷（AlN，B4 C，SiC，AD85）／RHA 钢复合靶体 DOP 实验数据对比，验证了提出的陶瓷靶体强度表达式的适用性。%Alekseevskii-Tate (A-T)model is widely used in the terminal ballistic analysis of long-rod projectiles'hypervelocity penetrations.The explicit expressions for both strengths of metallic projectile and target in a A-T model were proposed previously.However,there was no uniform conclusion for the strength of ceramic targets in a A-T model, especially,when the initial impact velocity of projectiles was larger than 1 500 m /s.Based on reduce-scaled reverse ballistic test data of long-rod tungsten projectiles'hypervelocity (1 500~5 000 m /s)penetrating into three ceramic (AlN, B4 C,SiC)/aluminum composite targets,by using A-T model,the expressions of the above three ceramic targets’ strengths under various projectile impact velocities were obtained.Furthermore,by comparing the above test data with the DOP tests data of 47 long-rod tungsten projectiles’hypervelocity (1 250~2 500 m /s)penetrating into ceramic (AlN,B4 C,SiC,AD85 )/RHA steel blocks targets,the applicability of the proposed expressions of ceramic strength were validated.