典型战斗部水下爆炸侵彻仿真

为了研究典型战斗部水下侵彻情况,采用ANSYS-LS/DYNA 3D有限元仿真软件,对圆柱形装药和半球形空穴装药水中爆炸情况进行数值模拟,并分析了两者冲击波压力、气泡直径的变化。结果表明:25μs时,半球形空穴装药近距离产生的冲击波压力是圆柱形装药的3倍多,但随着距离的增大,不同装药的影响逐渐减小;500μs时,半球形空穴装药水中爆炸形成的气泡轴向直径是圆柱形装药的1.5倍。采用ANSYS-LS/DYNA 3D有限元仿真软件,对圆锥形装药战斗部和半球形装药战斗部爆炸成型和水中侵彻情况进行数值模拟,结果表明:半球形装药战斗部形成的射流外形良好,侵彻水层的速度降较小,更适合水中侵彻破坏。

Penetration underwater explosion by typical warhead simulation

To investigate the typical warhead penetration underwater,the numerical simulation of explosion of cylindrical charge and half spherical cavity charge in water by finite element software ANSYS-LS/DYNA 3Dwas studied,and the changes of shock wave pressure and bubble diameter were analyzed.The result indicated that shock wave pressure produced by half spherical cavity charge was more than three times as large as cylindrical charge at 25μs,but the influence of different charges decreased by distance increasing.Bubble diameter produced by half spherical cavity charge was 1.5times of cylindrical charge at 500μs.Warhead explosion forming and water penetration of half spherical charge and conical charge were also simulated by ANSYS-LS/DYNA 3D.The result indicated that jet shape formed by half spherical charge was better,velocity drop of penetration layer was smaller,which was more suited in penetration underwater.