弹体冲击混凝土半无限靶的侵彻阻力与深度计算  

HYDRODYNAMIC MODEL FOR CONCRETE TARGETS UNDER IMPACT OF A PROJECTILE(Ⅰ):RESISTANCE AND DEPTH OF PENETRATION

作　　者：葛涛[1] 王明洋[1] 李晓军[1] 潘越峰[1] 

机构地区：[1]解放军理工大学工程兵工程学院,南京210007

出　　处：《振动与冲击》2008年第1期107-110,共4页Journal of Vibration and Shock

基　　金：教育部新世纪优秀人才支持计划

摘　　要：假设弹体是刚性的,将弹体侵彻冲击作用下的混凝土靶体划分为粉碎区、径向裂缝弹性区与原始弹性区,并认为侵彻粉碎区域内的混凝土材料处于类似于流体动力学状态,可采用水动力模型。根据伯努利方程推得了细长杆弹侵彻阻抗力的公式,进而求出锥形弹头侵彻阻抗力的等效平面解,得到了弹体的侵彻深度。利用实弹进行了以不同速度侵彻不同强度的混凝土靶体的验证计算,并与多个经验公式做了对比。结果表明,该模型是合理的,与经验公式相比计算结果趋于保守。A projectile is regarded as a rigid body.A concrete target is divided into pulverized region,elastic region with radial-crack and originally elastic region under impact of a projectile.Penetration failure region is in a similar hydrodynamic state and a hydrodynamic model can be applied to this region.The formula for penetration resistance of a slender projectile is gained using Bernoulli equation and the equivalent plane solution is also obtained for penetration resistance of a cone-shaped warhead.Based on the resistance,the penetration depth is deduced.Calculations are carried out for some real projectiles penetrating into some concrete targets with different strength in different velocities and the results are compared with those of some empirical formulas.The comparative analysis indicates that the hydrodynamic model is rational and more conservative than empirical formulas.

关 键 词：侵彻与贯穿 混凝土 水动力模型 伯努利方程 

分 类 号：TJ012.4[兵器科学与技术—兵器发射理论与技术]