超声速反舰战斗部大着角侵彻钢板数值模拟研究

Numerical Simulation on Anti-ship Warhead Penetrating Steel Target at Large Impact Angle

运用非线性动力学有限元软件LS-DYNA对反舰战斗部高速侵彻靶板进行了数值模拟。弹靶材料和靶架材料所采用的Johnson-Cook模型动态参数均通过材料静态试验、分离式霍普金森压杆试验和冲击试验数据拟合得到,数值模拟结果具有一定的可信性。通过数值模拟深入分析了战斗部侵彻靶板过程,大着角侵彻导致靶板穿孔呈椭圆状,头部吸能结构在碰靶时破碎吸能,可为战斗部装药及引信创造良好的侵彻环境。弹架无变形、无位移产生,可满足炮射试验要求。试验结果与数值模拟结果一致性较好,可为进一步研究提供依据和参考。

The penetration of anti-shape warhead into steel target at high velocity is numerically simulated using the LS-DYNA software. The dynamic parameters of Johnson-Cook material model are achieved by fitting material captive test data,SHPB test data and impact test data. The simulated results are believable. The penetration process of warhead is analyzed,and the perforation shape is elliptic because of large impact angle. The endergonic nose falls to pieces,and the penetrating entironment is ameliorated. The bracket of target has no distortion and displacement,which meets the test requirement. Numerically simulated results agree with the experimental results well.