飞机在模拟混合破片威力场打击下的易损性计算

混合破片战斗部杀伤元运动机理复杂,计算飞机在其打击下的易损性较为困难。利用ANSYS/LSDYNA建立混合破片战斗部威力场模型,通过后处理软件LSPREPOST筛选出威力场稳定时刻破片的速度及飞散角大小等信息,得到模拟的混合破片战斗部飞散特性数据。建立某型飞机易损性计算模型,在四种不同破片战斗部威力场下,同时考虑冲击波超压毁伤、穿透毁伤、引燃毁伤和引爆毁伤四种杀伤模式,通过编写程序计算飞机的杀伤概率。计算结果表明:在战斗部尺寸相同时,混合破片双层战斗部对飞机的杀伤概率最高,为导弹战斗部设计提供一定的理论支持。

Calculation on the Vulnerability of Aircraft from a Simulation Mixed Fragment Warhead

Due to the complexity of motor pattern of mixed-fragments warhead field,it is difficult to calculate the vulnerability of aircraft under this kind of threat.The software ANSYS/LS-DYNA is used to establish a mixedfragments warhead power field model,and the post-processing software LSPREPOST is used to prepare the speed,scattering angles and other information of the fragment by screening,getting the characteristic data of mixed fragment warhead.A computer program is coded to calculate the vulnerability of a particular model of aircraft,taking into account four kinds of damage,such as overpressure,penetration,ignition and detonation,as well as four kinds of warhead.Result shows that in the same size of warhead,the double-layer-mixed-fragments warhead obtained the highest kill probability,which can provide a theoretical support for the missile warhead design.