D字异型弹体斜侵彻多层钢靶弹道研究

Study on trajectory of D-shaped projectile oblique penetrating multiple-layered steel targets

针对异构型武器平台设计了一种上下不对称的D字异型弹体,采用ANSYS/LS-DYNA有限元软件分析了弹体侵彻三层间隔钢靶的弹道偏转规律,获取了侵彻速度(400 m/s、600 m/s、800 m/s)、侵彻着角(0°、10°、20°)以及弹尖高度(0~1.7 mm)对弹道偏移距离的影响。结果表明,随侵彻着角减小或者侵彻速度增大,D字异型弹体的弹道稳定性均呈提高趋势,其中10°着角下,侵彻速度对弹道稳定性的影响最为显著;在400 m/s、10°着角下,随弹尖高度由0 mm升高至1.7 mm,弹道总偏移距离呈现先减小再反向增大的变化趋势,且在0.8~1.1 mm时变化显著。

An asymmetry D-shaped projectile was proposed according to the heterogeneous weapon platform.The trajectory deflection characteristics of projectile penetrating three-layered steel targets were analyzed using the finite element software ANSYS/LS-DYNA.Further,the effects of impact velocity(400 m/s,600 m/s,800 m/s),impact angle(0°,10°,20°)and the height of nose tip(0~1.7 mm)on trajectory deflection were obtained.The results show that with the decrease of impact angle or the increase of impact velocity,the trajectory stability of D-shaped projectile improves.The impact velocity has a more significant effect on the trajectory stability at the impact angle of 10°.With the increase of projectile tip height from 0 mm to 1.7 mm under 400 m/s and 10°oblique impact,the total trajectory deflection exhibit decreasing trend and then reverses,and variation is more significant within the range of 0.8~1.1 mm.