高强度钢(921A)聚能切割数值仿真与试验研究

Numerical simulation and experimental research of high-strength steel(921A)concentrated energy cutting

基于有限元分析软件Ansys/LS-DYNA对4种不同炸高工况下的铜聚能切割索切割921A钢板过程进行数值模拟,其中炸高分别为0 mm、2 mm、4 mm和6 mm,钢板厚度为4 mm。根据仿真结果得出4 mm炸高最接近最优炸高,在这种工况下的切割效果最好。进行了4 mm炸高下921A钢板聚能切割试验,试验结果与数值仿真结果吻合度较高。研究结果可为解决工程实际问题提供参考。

Based on the finite element analysis software Ansys/LS-DYNA,the process of cutting 921A steel plate by copper linear shaped charge under four different burst height conditions was numerically simulated,in which the burst height was 0 mm,2 mm,4 mm and 6 mm,and the thickness of the stel plate was 4mm.According to the simulation results,it is concluded that 4 mm burst height is the closest to the optimal burst height,and the linear shaped charge under this working condition has the best cutting effect.The 4 mm burst height 921A steel plate shaped charge cutting experiment was carried out,and the experiment results were in high agreement with the numerical simulation results.The research results can provide reference for practical engineering problems.