新型聚能装药爆炸成型杆式射流数值模拟及试验研究

为解决杆式射流炸药能量利用率低、速度小等缺点，提出了一种新型高速杆式聚能装药结构，基于Autodyn软件分析了高速杆式射流的形成过程，给出了药型罩及附加装置截顶高度对杆式射流成型的影响，优化出了射流速度高、速度梯度小的杆式聚能装药结构并进行了试验验证，试验结果与数值模拟结果基本一致，表明采用的计算方法、材料模型及相关参数是合理的，验证了数值模拟的正确性，对进一步优化高速杆式射流设计具有一定的借鉴意义. 

Numerical Simulation and Experimental Investigation on New Type Jetting Projectile Charge

A new structure of jetting projectile charge (JPC) was proposed to solve the deficiencies of existing JPC, such as lower velocity and utilization ratio of explosive energy. The forming process of the new type JPC and the influence of truncate height of liners and additional structures on the JPC formation were studied based on Autodyn. An optimized JPC featuring high velocity and small velocity gradient was put forward and tested by experiments. The numerical results are in good agreement with the experimental ones, which indicates that the calculation method, material model and related parameters are reasonable. The correctness of the numerical simulation was also verified. The research results provide a certain reference value to further optimization of the design of JPC.