【摘要】 为探讨带壳装药预制破片空爆冲击波与破片的耦合机制，在考虑爆轰产物泄露效应的基础上，修正预制破片壳体装药的破片速度以及壳体膨胀半径的理论计算公式，进一步建立破片与冲击波波阵面耦合位置的理论计算模型；基于4发预制破片-壳体装药试验爆炸试验数据，并从试验研究的角度分析冲击波与破片在空气中的运动特性，结合壳体对冲击波强度的影响规律，计算得到冲击波与破片耦合作用下的临界爆距理论计算模型中修正系数k和η,并通过实例试验验证模型的有效性；在此基础上分析影响耦合作用位置的因素，发现药柱的装填系数和装药量对冲击波与破片的耦合位置影响较大。更多还原

【Abstract】 The coupling mechanism between the air blast shock wave and the fragment of the prefabricated fragment charge with a shell is studied.The theoretical calculation formula for the fragmentation velocity and expansion radius of the prefabricated fragment shell charge is modified on the basis of considering the leakage effect of detonation products, and a theoretical calculation model of the coupling position of the fragment and the shock wave front is established.The explosion test of 4-round prefabricated fragment-shell charges is made, and the motion characteristics of the shock wave and fragments in the air are analyzed from the perspective of experimental research. The correction coefficients k and η in the theoretical calculation model of critical blast distance under the coupling effect of shock wave and fragments are calculated by condsidering the influence of shell on the shock wave intensity based on the explosion test data, and the effectiveness of the model is verified by example tests.On this basis, the factors affecting the coupling position are analyzed.It is found that the filling coefficient and charge amount of grain have a great influence on the coupling position of the shock wave and the fragment.更多还原