主控因素对异型头弹丸半侵彻金属靶深度的影响特性研究

为研究异型头弹丸半侵彻金属靶的侵深特性,基于量纲方法对影响侵深的主控因素进行了分析,采用弹道枪加载和LS-DYNA软件对异型头弹丸半侵彻金属靶的作用过程进行了试验和数值模拟研究,分析了异型头弹丸结构、弹丸初速、靶板厚度等因素对侵彻深度的影响规律,获得了侵深随弹丸初速以及靶板厚度的变化曲线。研究结果表明,弹丸初速和靶板厚度是影响侵彻深度的关键因素,并拟合得到了弹丸初速和靶板厚度综合影响下的半侵彻侵深经验公式。研究结果可为半侵彻作用的研究及新型侵彻的工程计算方法等提供参考。

Influences of main controlling factors on the penetration depth of special-shaped head projectiles penetrating metal targets

In order to study the penetration characteristics of special-shaped head projectiles penetrating metal targets，based on the dimension method, the main controlling factors affecting the penetration depth were analyzed, experiments and numerical simulations on the process of partial penetrating metal targets by special-shaped head projectiles were carried out respectively by using a gas gun and the LS-DYNA software.The influences of the projectile structure, projectile initial velocity, and target thickness on the penetration depth were investigated.The curves of the penetration depth versus the initial projectile velocity and the target thickness were obtained.The results show that the key factors affecting the penetration depth of partial penetrating are the initial velocity of the projectile and the thickness of the target plate.The dimensionless empirical formula for expressing the relation of the initial projectile velocity and the target plate thickness to the penetration depth was derived through fitting.The results provide a reference to the study of partial penetration depth as well as to the engineering calculation of new type penetration problems.