摘要
针对93W长杆弹垂直侵彻半无限4340钢靶的准稳定阶段进行研究,根据弹尾和弹体平均速度时程曲线分析准稳定阶段的速度特性和时间分布,并对不同长径比不同入射速度条件下冲击速度与侵彻速度之间的关系进行研究。研究表明,不同条件下侵彻速度与冲击速度发生较大的变化,但两者之间的关系不变且满足线性关系。这种关系与利用流体动力学模型所推导出的线性关系明显不同。
Aimed at the quasi-steady stage of 93W long-rod penetrator vertically penetrating semi-infinite 4340 steel target,based on time-history curve for tail velocity and average velocity of penetrator,the properties and time distribution of the quasi-steady stage were analyzed.The relation between impact velocity and penetration velocity was researched under different initial incident velocities and various aspect ratios.The results show that they have linear relationship although the values of their velocities are different when aspect ratio or initial incident velocity is changed.But the conclusion distinctly differs from the result deduced from hydrodynamics.
出处
《兵器材料科学与工程》
CAS
CSCD
2011年第1期13-16,共4页
Ordnance Material Science and Engineering
基金
国家自然科学基金重点项目(10632080)
国防科技重点实验室基金(51453030205ZK0101)
关键词
侵彻力学
准稳定状态
冲击速度
侵彻速度
penetration mechanics
quasi-steady state
impact velocity
penetration velocity
