凝聚炸药撞击起爆的拉格朗日模拟

对凝聚炸药撞击起爆过程进行了Lagrange算法的数值模拟，建立了二维轴对称度三维非线性有限元模型,模拟表明，2种模型在低速撞击下结果差异较大而高速撞击下则差异较小；Comp B炸药相对PBX9504炸药对低速撞击的敏感性要低，在高速撞击下两者的差异较小；得到了炸药在不同撞击速度作用下的动态起爆性能．

Lagrange Simulation of Percussion Initiating Condensed Explosive

Lagrange method was used to simulate the process of condensed explosive initiation by percussion. Axisymmetric and 3D nonlinear finite element models were established. The simulation results show that two models gain much difference by lower velocity compaction, but little by higher velocity compaction. Comp B explosive has lower sensitivity than PBX9504 by lower velocity compaction, and they have little difference by higher velocity compaction. The explosive dynamical initiation behavior was gained by difference velocity percussion.