摘要
针对二次破片引爆车内弹药毁伤效能难评估问题,分析了基于热点学说的冲击引爆临界速度准则.利用数值模拟方法,以反应度为引爆判断参数,进行了冲击引爆过程中炸药内部压力与状态分析,验证了热点引爆学说;得到了聚能装药撞击位置、破片尺寸、破片材料等参数对冲击引爆影响规律,直径相同时,柱形破片的临界起爆速度比球形破片低;聚能装药残余弹体或二次破片完全有可能引爆车体内弹药,从而导致严重的二次效应,钢质破片有效尺寸约14cm、速度约1 800m/s,或者钨质破片有效尺寸约14cm、速度约1 500m/s就能发生冲击引爆.
For the difficult to assessment armored vehicle detonation resulted from behind armor debris,the shaped charge warhead was taken as research object,to analyze critical detonation velocity criterion based on hotspot theory.The explosive inner pressure and state during the shock detonation were analyzed by numerical simulation,taking reaction as detonating parameter,to verify the hotspot detonation theory.Influence rules of such factors as shaped charge impact place,fragment dimension and fragment material on shock detonation were obtained.Under the condition of same diameter,critical detonation velocity of cylindrical fragment is lower than of spherical fragment.Residual shaped charge or behind armor debris can completely detonate ammunitions inside armored vehicles,which results in serious secondary damage effect.There will be shock detonation of explosive hit by the steel fragment with effective dimension of 14 cm and velocity of 1800m/s or tungsten fragment with 14 cm and 1500m/s.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2014年第10期1018-1023,共6页
Transactions of Beijing Institute of Technology
基金
国家部委基金资助项目(2012ZB07)
关键词
冲击引爆
聚能装药
引爆临界速度
装甲车辆
shock detonation
shaped charge
detonation critical velocity
armored vehicles
