高速侵彻混凝土弹体侵蚀效应试验研究

Experimental study on mass loss of projectile subjected to high-velocity penetration into concrete target

为了探究高速侵彻条件下弹体侵蚀效应及其影响因素,本文利用滑膛炮发射平台,采用次口径发射技术,在800~1800m/s速度范围内,开展了卵形头部弹体高速侵彻混凝土终点效应试验,重点研究了弹体口径、材料、CRH(曲径比)、长径比、屈服强度等因素对侵蚀效应的影响。通过试验获得了高速侵彻条件下弹体侵蚀变形情况,分析了侵彻深度和弹体质量损失率的影响规律,对弹体侵蚀机理进行了探讨。结果发现:通过合理设计弹体结构,提高极限速度大小,增大弹体截面比动能,可以有效增加弹体最大侵彻深度;提高弹体材料动态屈服强度能在一定程度上减小弹体侵蚀效应,提高侵彻深度。

In order to investigate the abrasion effect of projectile subjected to high-velocity penetration into concrete target, the caliber smoothbore gun is utilized to launch the ogival projectile to penetrate into concrete with a velocity in the range of 800~1800 m/s by the sub-caliber launching method. Six different types of projectiles are employed to explore the effects of the projectile diameter, materials, CRH, length-to-diameter ratio, yield strength on abrasion effect. The deformation of the projectiles subjected to high-velocity penetration into concrete target is obtained experimentally. The penetration depth and the mass loss of the projectile are analyzed in detail. The mechanisms of the mass loss of the projectile are discussed. The results show that the maximum penetration depth can be increased by increasing the limit velocity or the projectile kinetic energy from proper structure design. The abrasion effect can be suppressed with the enhancement of yield strength of the projectile, and the penetration depth can be increased.