破片模拟弹速度衰减规律试验研究  

Experimental study on velocity attenuation law offragment simulated projectile

作　　者：马营 胡杰 冯志威 杨江 支凯艳 王昊东 MA Ying;HU Jie;FENG Zhiwei;YANG Jiang;ZHI Kaiyan;WANG Haodong(Norinco Group Test and Measuring Academy,Huayin 714200,China;School of Mechatronic Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]中国兵器工业试验测试研究院,陕西华阴714200 [2]西安工业大学机电工程学院,西安710021

出　　处：《兵器装备工程学报》2024年第2期54-61,共8页Journal of Ordnance Equipment Engineering

基　　金：中国兵器工业试验测试研究院基金项目(ZN-202003);中国兵器工业试验测试研究院青年托举基金项目(QT-2022012)。

摘　　要：针对材料防护性能评估试验中所用的FSP破片在空气中的运动规律问题,设计了一种符合北约STANAG 2920《装甲材料和防护服弹道试验方法》标准的破片模拟弹。采用试验研究、数值仿真和理论分析相结合的方法,对破片在距离炮口9~27 m内空气中运动的速度衰减规律进行了研究,通过30 mm弹道炮发射破片模拟弹,通过多组区截装置获得了破片在900~1 100 m/s范围内的速度数据,结合破片运动方程建立了速度衰减模型,推导了破片运动过程中迎风面积极值。结果表明:仿真与实测速度的最大误差为1.69%;破片速度衰减系数k为0.005 36,建立的破片速度衰减模型为v=v0×e-0.005 36x;破片的空气阻力系数cx仅与其轴线和水平平面的夹角有关,取值范围为[0.867 8,1.404 5]。通过试验验证,研究建立的破片速度衰减模型计算的破片速度与实测数据相吻合,可准确预判FSP破片在距离炮口27 m内给定位置点的速度,在进行防护等级为5级的材料防护性能评估试验时,炮目距可取25 m。For the problem of the motion law of FSP fragments in the air used in the evaluation test of material protection performance,a fragment simulation projectile is designed and proposed,which meets the NATO STANAG 2920“Ballistic Test Method for Armor Materials and Protective Clothing”standard.The velocity attenuation law of fragments moving in the air within 9~27 m from the muzzle was studied by means of experimental research,numerical simulation,and theoretical analysis.The fragment simulation projectile was launched by a 30 mm ballistic gun,and the velocity data of fragments in the range of 900~1100 m/s were obtained by using multiple sets of zones cutting devices.The velocity attenuation model was established based on the motion equation of fragments,and the extreme value of the windward area during the movement of fragments was derived.The results show that the maximum error between the simulation and the measured speed is 1.69%;the fragment velocity attenuation coefficient k is 0.00536,and the established fragment velocity attenuation model is v=v 0×e-0.00536 x;the air drag coefficient of the fragment c x is only related to the angle between the axis and the horizontal plane,and the value range is[0.8678,1.4045].Through experimental verification,the fragment velocity calculated by the established fragment velocity attenuation model is consistent with the measured data,which can accurately predict the velocity of FSP fragment at a given position point within 27 m from the muzzle.When carrying out the material protection performance evaluation test with a protection level of 5,the distance between the gun and the eye can be taken as 25 m.

关 键 词：FSP破片 速度衰减 衰减系数 空气阻力系数 试验测试 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程]