摘要
针对大尺寸弹药殉爆距离试验成本高、危险性大等问题,提出了带壳装药殉爆距离的等效缩放方法。采用量纲分析法与直接相似法,对圆柱形带壳装药殉爆的关键参数进行分析,得到了自然破片参数与破片冲击起爆临界速度的比例缩放关系,并通过修正壳体厚度减弱应变率效应对材料强度的影响。对比分析本文提出的等效缩放方法与带壳装药殉爆仿真结果,其殉爆距离的最大误差为5.2%左右,因此证明本文的等效缩放方法具有良好的普适性。受破片厚度影响,该方法适用于缩比比例不小于0.2的模型。
In response to the high cost and high risk of testing the detonation distance of large-sized ammunition,an equivalent scaling method for the detonation distance of shell loaded charges is proposed.By using dimensional analysis and direct similarity method,the key parameters of cylindrical shell charge detonation were analyzed,and the proportional scaling relationship between natural fragment parameters and critical velocity of fragment impact detonation was obtained.The influence of strain rate effect on material strength was weakened by modifying the shell thickness.By comparing and analyzing the equivalent scaling method proposed in this article with the simulation results of shell charge detonation,the maximum error of detonation distance is about 5.2%,which proves that the equivalent scaling method proposed in this article has good universality.Due to the influence of fragment thickness,this method is suitable for models with a scaling ratio of not less than 0.2.
作者
徐浩
宣兆龙
徐国星
XU Hao;XUAN Zhao-long;XU Guo-xing(National Experimental Teaching Demonstration Center for Ammunition Support and Safety Assessment of Army Engineering University of PLA,Shijiazhuang 050003,China)
出处
《价值工程》
2025年第26期129-132,共4页
Value Engineering
关键词
量纲分析
相似性理论
缩比模型
带壳装药
殉爆距离
dimensional analysis
similarity theory
scaled model
shell loaded medicine
transmission distance
