爆轰波形对EFP性能影响的数值模拟

Numerical Simulation of Effect of Blasting Wave on EFP Performance

文中利用ANSYS/LS-DYNA软件,通过改变起爆方式(点起爆、环形起爆及平面起爆)产生不同的爆轰波形(球面波、喇叭波及平面波),对不同爆轰波形作用下EFP的成型过程进行了数值模拟,对不同爆轰波作用下EFP的成型性、飞行稳定性及穿甲能力进行了比较,从而得出不同爆轰波形对EFP性能的影响。结果表明:平面波、喇叭波作用下所形成的EFP较球面波作用下所形成的EFP有更高的性能。

ANSYS/LS-DYNA code was used to simulate blasting wave shapes under point initiation, annular initiation and plane initiation. Formation and movement of EFP were also calculated. Formation capability, stability in moving and breaking ability of EFP formed by different blasting waves ware compared to get the effect of different blasting waves about EFP＇s capability. EFP under plane initiation way or annular initiation way has better performance cornpared with point initiation way