摘要
为预估独立结构破片受爆炸驱动下的初速特性,采用数值模拟方法得到不同驱动速度所需的装药量,并开展静爆试验。基于数值模拟方法构建了独立结构破片初速和相同装药载荷系数条件下Gurney速度间的函数关系,比较了装药高度和装药面积对破片初速的影响规律,独立结构破片速度约为对应Gurney速度的14%~18%;相同装药量条件下,增加装药面积较增加装药高度对破片初速的提升幅度可达28%以上。试验结果表明:数值模拟与试验测试结果吻合较好,最大误差在3.8%以内。研究结果可为独立结构破片初速和装药量设计提供参考。
To estimate the initial velocity of separate structural fragments under explosion,a numerical simulation method was used to achieve the charge quantity required for different speeds,and experimental verification was conducted.Based on the numerical simulation method,the formula between the initial velocity of separate structural fragments and the Gurney model under the same charge coefficient was produced.The influence of charge height and area on the initial velocity of a fragment was compared.The velocity of separate structural fragments ranged approximately 14%~18%of the corresponding Gurney model.Under the same charge quantity,the initial velocity of the fragment could be increased by at least 28%when increasing the charge area compared with the charge height.The results show that the numerical simulation is in reasonable agreement with the experiment,and the maximum error is within 3.8%.This paper provides a design reference for the initial velocity and charge of separate structural fragments.
作者
仝远
聂源
李德贵
金桂玉
朱志鹏
TONG Yuan;NIE Yuan;LI Degui;JIN Guiyu;ZHU Zhipeng(Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang 621900,Sichuan,China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China)
出处
《空天防御》
2024年第2期42-46,73,共6页
Air & Space Defense
基金
国家部委基金。
关键词
独立结构破片
爆炸驱动
破片初速
Gurney能量法
separate structural fragment
explosion drive
initial velocity of fragment
method of Gurney energy
