不确定侵彻条件下引信引爆策略对炸点深度影响分析

Influence of Fuze Detonation Strategy on Explosion Point Depth Under Uncertain Penetration Conditions

为研究不确定侵彻条件下引信引爆策略对炸点深度的影响规律,通过拉丁超立方采样设计了数值模拟试验,采用侵彻力函数代替弹靶接触力的快速算法进行了数值模拟计算,分析了不确定侵彻条件下5种引信引爆策略的炸深控制精度及其影响因素.结果显示,其炸深控制精度从低到高排序为延时、定冲量、定能量、定轴向位移、定垂直位移.定轴向位移和定垂直位移引信可以适用于不同靶体材料,在设定值相同的条件下,利用这2种策略可以到达基本相同的炸深.侵彻速度的不确定性对延时引信炸点控制精度的影响显著,对定位移引信的影响非常小,倾角和攻角是影响定位移引信炸点控制精度的主要原因.

To study the influence of fuze detonation strategy on Explosion Point Depth（EPD） under uncertain penetration conditions,the numerical experiments was designed based on the Latin Hypercube Sampling（LHS）.The numerical simulations were performed by using the rapid computational method in which the penetration force function replaces the contact force between the projectile and target.The EPD control accuracy of five kinds of fuze detonation strategy and their influence factors were researched under uncertain penetration conditions.The accuracy of EPD of the fuze detonation strategies from low to high is time delaysetting impulsesetting energysetting axial displacementsetting vertical displacement.The strategies,such as setting axial displacement and setting vertical displacement,can be applied to different targets.Under the conditions of same setting value,the depth obtained by the two strategies is basically the same.The effect of the uncertainty of penetration velocity on the strategy of time delay is remarkable,and the effect on the strategy of setting displacement is little.The yaw angle and attack angle are the chief factors affecting the accuracy of the strategy of setting displacement.