在二维有限元动力分析程序dyna2d中加入了两种反应速率模型，对圆头钢弹撞击PB X 940 4炸药的冲击起爆行为进行了数值模拟研究。
ShockinitiationbehaviorsofPBX-9404 impacted by round-nosed steelprojectileswere studiednumerically by means ofaddingtwokinds of reaction-rate into two-dimensionalfinite element code DYNA2D.