摘要
陶瓷材料由于具有硬度高 ,抗压强度高 ,低密度等优良的力学性能 ,被经常用作抗冲击的防护材料。当弹体高速冲击陶瓷靶时 ,在撞击表面产生一很强的压缩波 ,使陶瓷局部被破坏形成碎块 ,随着弹体的进一步侵彻 ,最终在弹头部附近产生一破碎区。本文即考虑了陶瓷的破碎 ,基于球型空腔膨胀理论求出了A T模型中的靶体强度参数Rt,利用A T模型求出了钨杆弹以 1 5～ 4 5km /s撞靶时的侵彻深度 。
Ceramics are often used as protective materials against impact damage because of their desirable properties such as low density, high hardness and compressive strength. Ceramic targets are fragmented and comminuted locally by the extreme compressive stress wave occurring at the penetrator-target interface when a penetrator impacts the ceramic targets at high velocity. As the penetrator proceeds, a comminuted zone is finally produced near the tip of the penetrator. The paper considers the influence of this region and derives the target strength term R t in an A-T model based on the spherically symmetric cavity expansion theory. The depth of penetration is calculated using the A-T model when long tungsten rods impact targets at 1 5～4 5km/s. Results of this model are compared with experimental data.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2002年第2期167-170,共4页
Acta Armamentarii
