摘要
在破片战斗部威力评估时,常采用分析方法和经验方法,这些方法不经过试验数据校正,会出现较大的误差。采用数值模拟方法的预测结果比上述两种方法更加准确,但是通过破片驱动的数值数值模拟计算,一般只能获得初始时刻破片场,而不能完整地描述破片飞散和破片作用目标的全过程。文中建立了包含数值方法和分析方法的威力仿真方法。采用该方法,实现对破片场形成、破片飞散、破片作用目标的全过程描述。基于数值计算结果,利用开发接口处理程序获得战斗部初始时刻破片场;利用分析方法,建立破片飞散、破片作用目标分析模型,分析模型中考虑空气阻力等因素的影响,从而获得破片弹道、破片威力参数和破片对靶板的毁伤效果。通过对虚拟靶板上命中破片进行统计,计算出破片命中密度分布和破片飞散角分布。在威力仿真方法的基础上,实现威力仿真软件的编码,针对某一定向战斗部进行了算例分析。
The analytical methods and empirical methods are often used in the lehtality assesment of fragmentation warhead.Large deviation may occur if the methods are not verified or modified by test data.The prediction results of the numerical simulation method are more accurate than those of forenamed methods,but by the numerical simulation driven by the fragment can only gain the initial fragment fields,the process of fragments movement and fragment impact on target can not be completely described.In this paper,the lethality simulation method including numerical simulation and theoretical analysis is established.The whole process description of fragment fields formation,fragment movement,and fragment impact on target are achieved.With the results of numerical simulation,the initial fragment fields are gained using interface code developed by us.The models of fragment movement and fragment impact on target are established in which the air drag is taken into account.Fragment trajectory,fragment lethality parameters and the effects of fragment impact on target are obtained.The fragment hitting density distribution and the fragment projection angle distribution can be calculated by counting the fragments hit on the virtual target.On the basis of the simulation model,the lethality simulation code is developed.One example of an aimable warhead is given.
出处
《计算机仿真》
CSCD
2007年第10期14-19,共6页
Computer Simulation
关键词
威力仿真
数值仿真
破片战斗部
Lethality simulation
Numerical simulation
Fragmentation warhead
