可瞄准预制破片战斗部数值模拟与试验研究

摘 要：利用ANSYS/LS-DYNA有限元分析软件对可瞄准战斗部变形过程与破片飞散过程进行数值模拟研究，获得破片初速、飞散角及不同距离处的破片密度，并通过样弹静爆试验对可瞄准战斗部设计进行验证研究。研究发现，可瞄准战斗部具有较高的破片初速、较固定的破片飞散角以及较高的破片密度，在导弹满足远距离精确探测并精确给出弹目交会时目标方位的情形下，未来防空导弹战斗部上可优先采用可瞄准战斗部。

Numerical simulation and experiment on aimable warhead of premade fragment

By using ANSYS/LS-DYNA,the deforming process of aimable warhead of premade fragment and the projectile process of fragments were numerically simulated.The scattering velocity,scattering angle and density of fragments at different distance were obtained.By the way,an experiment of explosion was carried out to validate the design of the aimable warhead.It reveals that the scattering velocity and the density of the aimable warhead’s fragments are high and the scattering angle is fixed.So,when the missile can exactly detect the target and accurately compute the target position,it is superior to adopt,the aimable warhead in the future design of air defense missile.