弹道学报2025，Vol.37Issue(1)：77-84,8.DOI:10.12115/ddxb.2024.06009
高速钨合金破片速度衰减规律试验研究
Experimental Study on Velocity Attenuation Law of High-velocity Tungsten Alloy Fragments
摘要
Abstract
To study the influence of fragment shape,mass and other factors on the velocity attenuation law of prefabricated fragments in the flight process,the flying velocity test was conducted on spherical fragments,cuboid fragments and cuboid fragments recycled from static explosion tests using 25 mm ballistic-gun.Among them,the diameters of the spherical fragments are 7 mm and 8 mm respectively,and the masses are 3.9 g and 4.7 g respectively;the size of the cuboid fragment is 8 mm×8 mm×7.05 mm,and the mass is 7.94 g.Using Doppler radar velocity-measurement technology,the real-time velocity data of fragments during flight were measured,and the variation law of fragment velocity with time was analyzed.The variation law of fragment velocity with displacement was obtained by numerical analysis method.Finally,the fragment velocity-attenuation-coefficient,the relationship between the velocity attenuation coefficient of spherical and cuboid fragments and the Mach number(Ma)were obtained through data fitting.For spherical fragments,the velocity attenuation coefficient shows a decreasing trend with the increase of fragment radius.The velocity attenuation coefficients of 8mm spherical fragments were compared with that of 8 mm×8 mm×7.05 mm cuboid fragments.The result shows that the masses of the two types of fragments are significantly different,but the average velocity-attenuation-coefficients are close.Within the initial velocity range of 1 300-2 100 m/s,compared to cuboid regular fragments,the average velocity-attenuation-coefficient of cuboid fragments recovered from static explosion experiments is larger,indicating that they experience greater air resistance and faster velocity attenuation during flight in the air.The shape of the cuboid fragments recycled from the static explosion test is closer to that of fragments generated after the actual warhead explosion,and the test result has greater reference value for the design and power evaluation of the warhead.关键词
高速破片/雷达测速/衰减系数/破片形状/空气阻力Key words
high-velocity fragment/radar measurement velocity/attenuation coefficient/fragment shape/air resistance分类
军事科技引用本文复制引用
袁硕,赵东志,程春,郭策安,赵爽,蒋招绣,王紫艺..高速钨合金破片速度衰减规律试验研究[J].弹道学报,2025,37(1):77-84,8.基金项目
沈阳市科技人才项目(RC230925) （RC230925）
