The failure mechanism of a cylindrical shell cut into fragments by circumferential detonation collision was experimentally and numerically investigated. A self-designed detonation wave regulator was used to control the detonation and cut the shell. It was found that the self-designed regulator controlled the fragment shape. The macrostructure and micro-characteristics of fragments revealed that shear fracture was a prior mechanism, the shell fractured not only at the position of detonation collision, but the crack also penetrated the shell at the first contact position of the Chapmen-Jouguet (C-J) wave. The effects of groove number and outer layer thickness on the fracture behavior were tested by simulations. When the thickness of the outer layer was 5–18 mm, it has little effect on fragmentation of the shell, and shells all fractured at similar positions. The increase of the groove number reduced the fracture possibility of the first contact position of the C-J wave. When the groove number reached 7 with a 10 mm outer layer (1/4 model), the fracture only occurred at the position of detonation collision and the fragment width rebounded.

通过实验和数值研究了圆柱壳被圆周爆轰碰撞切割成碎片的破坏机制。自行设计的爆震波调节器用于控制爆震和切割炮弹。发现自行设计的调节器控制了碎片形状。破片的宏观结构和微观特征表明剪切断裂是一种先验机制，壳不仅在爆轰碰撞位置断裂，而且裂纹还在查门-朱盖（CJ）波的第一接触位置穿透壳. 通过模拟测试了凹槽数量和外层厚度对断裂行为的影响。当外层厚度为5-18mm时，对壳的碎裂影响很小，和炮弹都在相似的位置破裂。凹槽数的增加降低了CJ波第一接触位置断裂的可能性。当外层为10 mm（1/4模型）槽数达到7个时，断裂仅发生在爆轰碰撞位置，碎片宽度回弹。